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One of the European policy objectives, as envisaged by the EC Transport White Paper, is to reduce Europe's dependence on imported oil and to cut greenhouse gas emission (GHG) from transport by 20% by 2030 and by 70% until 2050 (with respect to 2008 levels). For achieving this goal, the role of integrated energy and urban mobility systems are explored as part of a city

Vehicle trajectory descriptions are required for the development of driving behaviour models and in the calibration of several traffic simulation applications. In recent years, the progress in aerial sensing technologies and image processing algorithms allowed for easier collection of such detailed traffic datasets and multiple-object tracking based on constrained flow optimization has been shown to produce very satisfactory results, even in high density traffic situations. This method uses individual image features collected for each candidate vehicle as criteria in the optimization process. When dealing with poor image quality or low ground sampling distances, feature-based optimization may produce unreal trajectories.In this paper we extend the application of the k-shortest paths algorithm for multiple-object tracking to the motion-based optimization. A graph of possible connections between successive candidate positions was built using a first level criteria based on speeds. Dual graphs were built to account for acceleration-based and acceleration variation-based criteria. With this framework both longitudinal and lateral motion-based criteria are contemplated in the optimization process. The k-shortest disjoints paths algorithm was then used to determine the optimal set of trajectories (paths) on the constructed graph.The proposed algorithm was successfully applied to a vehicle positions dataset, collected through aerial remote sensing on a Portuguese suburban motorway. Besides the importance of a new trajectory dataset that will allow for the estimation of new behavioural models and the validation of existing ones, the motion-based multiple-vehicle tracking algorithm allowed for a fast and effective processing using a simple optimization formulation.

The objective of this paper is the analysis of the state-of-the-art in risk indicators and exposure data for safety performance assessment in Europe, in terms of data availability, collection methodologies and use. More specifically, the concepts of exposure and risk are explored, as well as the theoretical properties of various exposure measures used in road safety research (e.g. vehicle- and person-kilometres of travel, vehicle fleet, road length, driver population, time spent in traffic, etc.). Moreover, the existing methods for collecting disaggregate exposure data for risk estimates at national level are presented and assessed, including survey methods (e.g. travel surveys, traffic counts) and databases (e.g. national registers). A detailed analysis of the availability and quality of existing risk exposure data is also carried out. More specifically, the results of a questionnaire survey in the European countries are presented, with detailed information on exposure measures available, their possible disaggregations (i.e. variables and values), their conformity to standard definitions and the characteristics of their national collection methods. Finally, the potential of international risk comparisons is investigated, mainly through the International Data Files with exposure data (e.g. Eurostat, IRTAD, ECMT, UNECE, IRF, etc.). The results of this review confirm that comparing risk rates at international level may be a complex task, as the availability and quality of exposure estimates in European countries varies significantly. The lack of a common framework for the collection and exploitation of exposure data limits significantly the comparability of the national data. On the other hand, the International Data Files containing exposure data provide useful statistics and estimates in a systematic way and are currently the only sources allowing international comparisons of road safety performance under certain conditions.

The European Commission Transport White Paper

Road restraint systems are roadside structures that include safety barriers, crash cushions, terminal of barriers, the transitions among different road restraint systems, motorcyclist protection devices, etc. These systems are used to protect vehicle occupants from dangerous roadside elements and are a key issue in roadside safety.In Europe, safety barriers are currently designed for different performance levels using three main criteria: containment, impact severity and deformation of the barrier.The impact severity level is exclusively associated with injury risk to vehicle occupants and assumes that different severity levels correspond to different levels of injuries.From these observations, three questions emerge: what consequences can be expected for the passengers of an errant vehicle when it is contained by a safety barrier? Systems with different impact severity levels lead to diverse severity consequences? What are the benefits of using barriers with lower impact severity levels?To answer these questions this paper examines how the number of run-off-the-road crashes and victims

The economic appraisal of the external effects of transport options can provide important data for policy making. On the other hand, impacts of non-motorized modes have often been undervalued in comparison to other transport modes. To this end, assessing the potential health benefits of walking and cycling is being increasingly recognized as an important step to promote sustainable mobility policies.This paper is built upon the contracted study for the World Health Organization (WHO) on the economic appraisal of health benefits of walking and cycling investments for the City of Viana do Castelo. This Portuguese city which integrates the WHO European Healthy Cities Network provided a suitable policy context for the former application in Portugal of the WHO Health Economic Assessment Model (HEAT) for appraising the health benefits of non-motorized transport. The study comprised the evaluation of the following investment actions: a) Improvements of the urban public space for pedestrians; b) Planning future cycling infrastructures. This paper provides a discussion of the methodological challenges and key findings that have arisen from the WHO HEAT application study, when trying to answer the following questions:- If x people cycle (or walk) a distance of y kilometers on most days, what is the economic value of the correspondent health benefits? - What levels of uptake of cycling in the future are required for the cycling plan to be economic viable? - What health benefits are associated to a projected increase in the traffic levels of pedestrians (% increase from the reference level)? - Do health benefits of cycling (and walking) investments outweigh their costs?Results from this study make it able to add novel evidence for the Portuguese urban context on the potential health benefits of walking and cycling (maximum and mean annual health benefits), including the cost-benefit ratio indicators. These indicators are expected to be useful for policy makers and city officers involved in the promotion of sustainable mobility.

This paper summarizes the result of a study regarding the creation of tools that can be used in intervention methods in the planning and management of urban road networks in Portugal. The first tool relates the creation of a geocoded database of road accidents occurred in Lisbon between 2004 and 2007, which allowed the definition of digital maps, with the possibility of a wide range of consultations and crossing of information.The second tool concerns the development of models to estimate the frequency of accidents on urban networks, according to different desegregations: road element (intersections and segments); type of accident (accidents with and without pedestrians); and inclusion of explanatory variables related to the road environment. Several methods were used to assess the goodness of fit of the developed models, allowing more robust conclusions.This work aims to contribute to the scientific knowledge of accidents phenomenon in Portugal, with detailed and accurate information on the factors affecting its occurrence. This allows to explicitly include safety aspects in planning and road management tasks.

Mobility has an important impact on the overall functioning of cities and quality of life of citizens. On the other hand, motorized road traffic is associated with high levels of noise and air pollutant emissions along with congestion and other externalities, leading to considerable social and environmental costs and degradation of human health. Following the World Health Organization, physical inactivity is one of the leading risks in Europe, associated with nearly 1 million deaths per year. In Portugal around 69% of the adult population do not reach the minimum recommended level of physical activity and 31% were considered sufficiently and highly active. Therefore, more sustainable transport modes such as walking and cycling are envisaged. This paper is built upon the contracted work with the city of Viana do Castelo, located in the North of Portugal, conducted for the World Health Organization (WHO) by the University of Minho and LNEC. The work integrates a research roadmap (case study plan for the application of the Health Economic Assessment Tool) for the appraisal of health benefits of specific walking and cycling investments in the city. The work presented here focus on the former part of the study which involved joint team work with the city officers for defining the target policy scenarios for using the WHO Economic Assessment Tool, the exchange of experiences and practices with other European cities regarding the use of this tool for health benefits assessment, the characterization of the mobility patterns at the reference and alternative policy scenarios set for the cost-benefit analysis, the data collection plan and the expected impacts from the early consideration of health benefits of those non-motorized investments. Results from the evaluation study can help the City elected officials to demonstrate the health benefits of walking and cycling investments. Individuals

This article is a comprehensive Book review of the "Handbook of Transport Economics" (904 pages) by A. de Palma, R. Lindsey and E. Quinet, published in 2011 by Edward Elgar, Cheltenham, UK, ISBN: 978 1 84720203 1.

According to official statistics, a large percentage of crashes in Portugal are reported on urban roads. For instance, from 2004 to 2007, about 70% of all injury accidents and 43% of the fatalities occurred inside urban agglomerations. This important safety problem has also been observed on the urban network of Lisbon. Understanding this significant problem, the Government of the Portuguese Republic via its research grant agency

Este trabalho analisa acidentes envolvendo pedestres em travessias urbanas, buscando identificar fatores de risco e propor medidas de mitigação com base em modelos de previsão de acidentes (MPAs). A pesquisa recorre a Redes Neurais Artificiais (RNA) aplicadas a uma base de dados da Autoridade Nacional de Segurança Rodoviária (ANSR) referente ao período de 2017 a 2021. Embora os modelos apresentem alta taxa de acerto, o poder discriminativo foi limitado pela predominância de casos de feridos leves (92%). Os principais fatores de risco apontados envolvem falhas na sinalização luminosa, iluminação noturna insuficiente, más condições de bermas e pavimento, além de limites de velocidade elevados em zonas urbanas. A comparação entre os períodos pré-COVID19 e COVID19 revela redução significativa no número de acidentes e alterações no perfil etário das vítimas mortais. Como trabalho futuro, recomenda-se a exploração de outros algoritmos de machine learning para melhor lidar com a distribuição desequilibrada dos dados e aprimorar a identificação dos fatores críticos associados à sinistralidade pedonal.

Within the European Commission

Most of European cities face increasing problems caused by excessive traffic of conventional fuel-based transport modes. To reverse this situation, sustainable urban mobility policies have been promoting soft modes of transport, such as walking. Despite the advantages of walking in reducing traffic congestion and pollution, cities have not always evolved to accommodate the needs of pedestri-ans. According to the European Commission, in 2020, 20% of road fatalities in the European Union (EU) and 21% in Portugal were pedestrian. Pedestrian fatal-ity rates per million population was 9.7 for all EU countries and 13.1 for Portugal. In European and Portuguese urban areas, 36% and 27% of the fatalities were pedestrians

Intersections are considered to be high-risk areas due to noncompliance with traffic rules. Failure to yield right of way and running red lights are major issues, but improper turning manoeuvres, like illegal U-turns and improper signalling, are also contributor factors to accidents. Vulnerable road users are particularly at risk at these locations, as these violations may result in severe injuries and congestion.The EU has set ambitious road safety goals in order to reduce the number of killed and injured in road crashes and has recognized the importance of using key performance indicators (KPIs) for assessing road safety performance as a support of road safety policies implementation. In this line of view, the EU promoted several initiatives, where the Baseline and the Trendline projects stand out.The Trendline project introduces several innovative KPIs, including redlight violations at intersections. The gathering of these KPI, using consistent criteria, is a novel effort across multiple European countries.Portugal's prevalent speeding is-sue emphasizes the significance of this endeavour, especially for the country. This paper focuses on the preliminary analysis of intersection compliance, analysing factors like traffic signals, yielding right of way, pedestrian safety, and infrastructure design, whose analysis is crucial for improving road safety.

This abstract aims to provide an overview of the new Portuguese design standards for urban roads, with a particular focus on the pedestrian infrastructure. Walking, as one of the most fundamental traffic modes, emphasizes the importance of thoughtful and inclusive urban road design that effectively meets the mobility needs of all citizens.The development of the pedestrian infrastructure must consider the heterogeneous characteristics of pedestrians and their varying levels of vulnerability, thereby adopting a universal and inclusive urban design. In line with the objectives set out by PENSE 2020 and following the principles of the Safe System, these standards are devised to enhance road safety, particularly for vulnerable users, and to integrate knowledge of road safety in urban settings within the Portuguese context of urban design.Pedestrian pathways are defined within the territorial public domain and cater to individuals traveling by foot, in wheelchairs, or with personal mobility aids. The document focuses on the formal network of pedestrian pathways, including sidewalks, paved pedestrian routes, and crossings, while also acknowledging the spontaneous nature of pedestrian movement along unpaved routes.Design considerations are comprehensive, addressing the dimensions needed to support various pedestrian activities and the interface with urban elements that affect street furniture placement and pedestrian circulation. The typology of sidewalks chosen is also dependent on the road hierarchy, with distinct recommendations according to the varying levels of interactions between pedestrians and vehicular traffic.The new standards further advocate for pedestrian safety through various traffic calming measures, such as segregated zones and shared spaces, with speed regulation forming a core component of the design approach.

Road safety key performance indicators (KPIs) provide essential insights into factors associated with crash and injury risks. The Trendline project, involving 25 EU Member States, focuses on collecting and analyzing road safety KPIs to inform policy decisions. In addition to standard KPIs recommended by the European Commission, the project explores ten experimental KPIs, including road users

Following the publication of Directives 2008/96/EC and 2019/1936/EC, Europe-an Union (EU) Member States (MS) developed a comprehensive set of road infrastructure safety management (RISM) procedures that are applied to all roads which are part of the Trans-European Road Network (TEN T), all motorways and primary roads, and to EU funded interurban roads with full access control. These roads carry the bulk of traffic volumes in the EU.This paper clarifies the notion of

The Weights and Dimensions Directive (96/53/EC), which governs the weights and dimensions of heavy commercial vehicles in the European Union, has been in place for 25 years. It is currently being reviewed by the European Commission with the aim of updating it to reflect the current needs of the freight transport market. This paper will describe the steps in the review and update process.The starting point is an evaluation of what the current Directive has achieved since its entry into force some 25 years ago, in light of the objectives set at its inception and how these have changed and impacted amendments to the Directive over its lifetime.Based on the results of the evaluation, the new policy priorities and related legislation, a set of new policy measures are developed and assessed on its economic, social and environmental impacts. This includes measures to decarbonize the sector, achieve further harmonization of rules among Member States, and strengthen the enforcement of rules.

This paper presents the available information on overweight road freight vehicles around the world, the impacts they have on road infrastructure, road safety and the economic position of road infrastructure managers, and collected global best practices to prevent and mitigate overloading.Overloading can occur on the basis of Gross Vehicle Weight or on axle weight. Existing limits vary greatly between countries, as do compliance rates, which typically are much higher in Europe and North America than in other regions. Overloading greatly affects infrastructure (road pavements and bridges), though certain designs are more sensitive to overloading than others. In addition, aspects like traffic volume, vehicle design, but also climate and weather can exacerbate certain impacts.Poor infrastructure quality as a result of overloading impacts road safety, but overloaded vehicles are also subject to a deterioration of vehicle performance (braking, steering, handling, structural failure,

O presente trabalho insere-se no âmbito de um protocolo entre o IMT - Instituto da Mobilidade e dos Transportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e destina-se a dar resposta à medida 25.92 do objetivo estratégico Infraestruturas Mais Seguras da Estratégia Nacional de Segurança Rodoviária

The application of low-cost road and traffic engineering measures (LCEM) is a cost-effective method for reducing accidents and their consequences. Empirical evidence shows that enforcement contributes to improvements on driving behaviour and road safety; however, results from reducing enforcement are seldom presented.In this paper a presentation is made of the impact LCEM and changes in enforcement intensity had on selected driving behaviour variables and safety levels on a 170 km single carriageway trunk road. LCEM were implemented on the road, followed a year later by the commitment of exceptionally intense and severe law enforcement and, after two years, its relaxation. The impacts of these safety interventions were evaluated through observational before-after studies. The expected number of injury accidents was reduced by 41% (less 75% fatalities), when considering the combined effect of LCEM and enforcement; suppression of strict enforcement was related to a 20% increase in the number of fatalities.

This case study refers to a successful application of an asphalt rubber wearing course in the frame ofthe rehabilitation of the pavement of the National Road EN 1 between Landiosa and Picoto.It concerns asphalt rubber manufactured by the wet process, using gap-graded aggregates. / O presente caso de estudo refere-se à aplicação bem sucedida de misturas com betume modificadocom borracha reciclada de pneus em camada de desgaste, no âmbito das obras de reabilitação dopavimento da estrada nacional EN 1, entre Landiosa e Picoto.Diz respeito, em particular, ao fabrico, por via húmida, de mistura betuminosa com borrachautilizando agregados com granulometria descontínua.

Manual de boas práticas para uma mobilidade sustentável, no âmbito do projecto nacional "Mobilidade Sustentável" coordenado pela Agência portuguesa do Ambiente (Vol. II). O projecto Mobilidade Sustentável envolveu uma rede de 15 centros de investigação/universidades do país, incluindo o LNEC.

Nesta publicação apresentam-se os aspectos relativos à concepção do projecto Mobilidade Sustentável, principais conclusões e recomendações.

Traffic management is gaining increasing importance in solving the major problem of traffic congestion present in many countries. Traditional techniques of RADAR, LIDAR and LASAR to address this problem are no longer an efficient solution, as they are time-consuming and expensive. In this modern age of growing technology and population, challenges are being overcome with several new ways to make the traffic system smarter, more reliable and robust, considering the overall interaction of all the traffic components: vehicles, drivers and pedestrians. These systems are largely supported on Intelligent Traffic System (ITS), and their applications are mostly dedicated to traffic monitoring based on video processing, vehicle detection and tracking. Intelligent surveillance systems may also employ computer vision and pattern recognition techniques. This chapter addresses these new solutions that are being used for traffic management, their advantages and disadvantages, the challenges of their implementation, and most important, the ability to support traffic management systems in their pursuit of solving critical problems of congested transportation networks.

O tempo decorrido (ou a distância percorrida) até à ocorrência de um evento, ou a duração do mesmo, podem ser analisados através de modelos de duração baseados em risco (hazard-based duration models), os quais têm sido amplamente utilizados em campos como a medicina, as ciências sociais e a engenharia industrial. Contudo, são relativamente escassos os estudos que aplicaram modelos de duração à engenharia de transportes.Este capítulo inclui dois exemplos de aplicação de modelos de duração à investigação em engenharia de transportes. O primeiro diz respeito às distâncias percorridas por veículos descontrolados em despistes ocorridos na Carolina do Norte (E.U.A.). O segundo refere-se ao tempo decorrido até à transferência modal nas deslocações para a escola de um conjunto de alunos de 162 turmas de 51 escolas do ensino básico em Portugal.

Em Portugal, a investigação sobre o conhecimento dos fatores que afetam a probabilidade de ocorrência de acidentes tem-se centrado essencialmente nas estradas interurbanas. No entanto, as zonas urbanas, onde ocorrem elevadas percentagens de acidentes corporais requerem uma atenção prioritária. Com o presente estudo pretendeu contribuir-se para a melhoria da segurança rodoviária em meio urbano, através da criação de ferramentas que podem ser utilizadas em métodos de intervenção em que a segurança dos utentes vulneráveis seja considerada explicitamente nas fases de planeamento e gestão das redes viárias. Uma das referidas ferramentas resultou da elaboração de modelos de estimativa de frequência de acidentes para redes urbanas, segundo diversas desagregações, em função de características do elemento rodoviário: em intersecções (três ramos, quatro ramos e rotundas) e em segmentos; segundo o tipo de acidente (atropelamentos e restantes acidentes com vítimas); e segundo a inclusão de variáveis explicativas relacionadas com o ambiente rodoviário: simplificados (apenas com as variáveis de exposição) e globais (com todas as potenciais variáveis explicativas). O desenvolvimento destes modelos foi apoiado numa base de dados georreferenciada dos acidentes rodoviários ocorridos em Lisboa entre 2004 e 2007, com a qual foi possível explorar os dados de sinistralidade na área geográfica em análise. Estas ferramentas podem ser usadas diretamente na gestão das infraestruturas rodoviárias da cidade de Lisboa e, após pequenas adaptações, estendidas a outros municípios, dotando as respetivas entidades competentes em matéria de segurança rodoviária com informação rigorosa e detalhada sobre os fatores intervenientes na ocorrência de acidentes em meio urbano e a respetiva distribuição espacial.

Os dados discretos ou em escala nominal desempenham um papel fundamental nos transportes porque muitas análises de políticas lidam com estes tipos de dados. Exemplos de dados discretos nos transportes incluem o modo de transporte (automóvel, autocarro, comboio), o tipo ou categoria de veículo e o tipo de acidente rodoviário (despistes, colisões frontais, colisões traseiras, etc.). O conhecimento do efeito das diferentes intervenções de segurança rodoviária na redução da gravidade das lesões resultantes de acidentes rodoviários exige uma avaliação empírica detalhada das interações, reconhecidamente complexas, entre veículos, estrada e fatores humanos.Os avanços mais recentes nas metodologias estatísticas aplicadas a dados discretos sobre sinistralidade rodoviária permitiram o desenvolvimento de modelos sofisticados capazes de serem usados para determinar com rigor a influência dos fatores acima referidos nos níveis de gravidade das lesões resultantes dos acidentes rodoviários.Neste contexto, a aplicação de modelos de resultado discreto permite identificar um conjunto de fatores, relacionados com a envolvente rodoviária, que são estatisticamente relacionáveis com a gravidade das lesões dos utentes envolvidos em acidentes rodoviários, permitindo aperfeiçoar a conceção e o dimensionamento das estradas, bem como orientar políticas conducentes à melhoria da segurança rodoviária. Este capítulo inclui um exemplo de aplicação do modelo logit multinomial usando a gravidade das lesões no condutor como variável de resposta.

Spatial organization in cities has often given a special attention to the requirements of motorized vehicles, neglecting pedestrians and cyclists

The importance of sustainable urban mobility plans is widely recognized by local and regional authorities across Europe. Technological innovation opportunities such as those offered by current and future ICT can contribute for cities to advance towards sustainable mobility and accessibility for inclusive public spaces.This article is built on an innovative living lab experience of the Intermunicipal Community of the Algarve (AMAL), the regional transport authority, scientifically supported by the LNEC, in Portugal, that comprised the development of the designated

O conhecimento dos factores que afectam a probabilidade de ocorrência de um acidente éuma área de investigação relevante de há muitas décadas devido aos enormes custos para asociedade dos acidentes rodoviários. Em Portugal, os desenvolvimentos nesta matériacentraram-se essencialmente nas estradas inter-urbanas. No entanto, as zonas urbanas,caracterizadas por elevadas percentagens de acidentes corporais (cerca de 69% do total entre2004 e 2008), requerem uma atenção prioritária.Com o presente estudo pretendeu contribuir-se para a melhoria da segurança rodoviária emmeio urbano, através da criação de ferramentas que podem ser utilizadas em métodos deintervenção em que a segurança dos utentes vulneráveis seja considerada explicitamente nasfases de planeamento e gestão das redes viárias.A primeira ferramenta correspondeu à criação de uma base de dados georreferenciada dosacidentes rodoviários ocorridos na cidade de Lisboa entre 2004 e 2007, que permitiu adefinição de mapas digitais, com possibilidade de uma grande diversidade de consultas e decruzamentos de informação.A segunda ferramenta refere-se à elaboração de modelos de estimativa de frequência deacidentes para redes urbanas, segundo diversas desagregações: segundo o elementorodoviário: em intersecções (intersecção de três ramos, intersecção de quatro ramos erotundas) e em segmentos; segundo o tipo de acidente: atropelamentos e restantes acidentescom vítimas; e segundo a inclusão de variáveis explicativas relacionadas com o ambienterodoviário: simplificado (apenas com as variáveis de exposição) e global (com todas aspotenciais variáveis explicativas). Foi considerada a incorporação de dados de exposiçãorelativos aos utentes vulneráveis por forma a melhorar a capacidade de estimativa dasinistralidade em redes urbanas.Estas duas ferramentas podem ser usadas directamente na gestão de infra-estruturas, dotandoas entidades com competência em matéria de segurança rodoviária com informação rigorosa edetalhada sobre os factores intervenientes na ocorrência de acidentes em meio urbano erespectiva distribuição espacial.

No período de 1988 a 1993, ocorreram anualmente nas estradas rurais de uma faixa de rodagem e dois sentidos da Rede Rodoviária Nacional de Portugal, em média, cerca de 1471 acidentes corporais anuais em curva fora de cruzamentos. Estes acidentes constituem cerca de 33% dos acidentes corporais fora de cruzamentos participados na referida rede.O objectivo do presente trabalho é contribuir para o conhecimento da influência da estrada na ocorrência de acidentes e para o desenvolvimento de um método para avaliação de traçados rodoviários do ponto de vista da segurança.Foram realizadas in situ campanhas de recolha de dados sobre as distribuições de velocidades dos condutores, os quais foram relacionados com as características geométricas das estradas e com a respectiva sinistralidade. Foram desenvolvidos modelos para estimativa de perfis de velocidade de circulação livre, bem como modelos para estimativa da frequência de acidentes, em estradas de uma faixa de rodagem e dois sentidos, adaptados às condições de tráfego nacionais. Os referidos modelos foram integrados num procedimento para detectar inconsistências de velocidade em especial associadas à ocorrência de acidentes em curva, o qual foi usado para fundamentar uma proposta de quantificação de critérios de homogeneidade de traçado, adaptados à realidade do sistema de tráfego rodoviário português.

O presente relatório refere-se a um estudo de caracterização do comportamento do condutor no quese refere à utilização de dispositivos móveis durante a condução, nas principais categorias de estradasde Portugal, efetuado pelo LNEC no âmbito do projeto europeu Baseline, cofinanciado pela ComissãoEuropeia (CE).O projeto Baseline destinou-se ao desenvolvimento de indicadores do desempenho do sistema detransporte rodoviário na ótica da segurança (IDS) e nos quais se inclui um relativo à distração nacondução motivada pela utilização de telemóveis ou outros dispositivos móveis.Foi utilizada a metodologia de recolha de dados proposta no âmbito do projeto, que estabelece diversoscritérios relativos, designadamente, à seleção de locais, à dimensão da amostra e ao procedimento derecolha de dados. São apresentados os valores de IDS calculados para três classes de rodovia:autoestadas, estradas interurbanas e arruamentos urbanos. Os dados referem-se unicamente a diasúteis. Os trabalhos de campo decorreram em 2022.Observou-se que a maioria dos condutores nas autoestradas, estradas interurbanas e urbanas nãoutiliza dispositivos móveis enquanto conduz, com uma taxa ligeiramente superior de conformidade nasautoestradas, atingindo um IDS de 98%. Relativamente à desagregação por tipo de veículo, verificousemaior frequência de utilização de dispositivos móveis pelos condutores de veículos ligeiros demercadorias do que pelos condutores de outros tipos de veículos (nos condutores de autocarros foimesmo residual).

O presente trabalho insere-se no âmbito de um protocolo entre o Instituto da Mobilidade e dosTransportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e consiste no relatório deponderação do processo de consulta pública a que foi sujeito o documento normativo para aplicação aarruamentos urbanos, recentemente concluído.

O presente trabalho insere-se no âmbito de um protocolo entre o IMT - Instituto da Mobilidade e dos Transportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e destina-se a dar resposta à medida 25.92 do objetivo estratégico Infraestruturas Mais Seguras da Estratégia Nacional de Segurança Rodoviária

O presente trabalho insere-se no âmbito de um protocolo entre o IMT - Instituto da Mobilidade e dos Transportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e destina-se a dar resposta à medida 25.92 do objetivo estratégico

O presente trabalho insere-se no âmbito de um protocolo entre o IMT - Instituto da Mobilidade e dos Transportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e destina-se a dar resposta à medida 25.92 do objetivo estratégico Infraestruturas Mais Seguras da Estratégia Nacional consistindo na elaboração de uma norma técnicapara aplicação a arruamentos urbanos, que possa contribuir para promover a melhoria darede rodoviária municipal, designadamente através da adoção, no País, de critérios uniformes no dimensionamento do traçado e no ordenamento da envolvente dos arruamentos urbanos, aspetos importantes para a obtenção de rodovias autoexplicativas necessárias para o pretendido Sistema Seguro.A norma técnica está organizada em quatro fascículos, destinados a contemplar os fundamentos sobre utentes e rede rodoviária, as características geométricas para rodovias com tráfego motorizado e não motorizado e as medidas de acalmia de tráfego aplicáveis a cada tipo de arruamento.Apresenta-se neste documento o Fascículo III, relativo às caraterísticas geométricas para vias de tráfego não motorizado, onde se incluem considerações sobre os caminhos pedonais e sobre os percursos para velocípedes. São também apresentadas considerações sobre o estacionamento de veículos não motorizados e as particularidades da conceção das zonas de coexistência.

O presente trabalho insere-se no âmbito de um protocolo entre o IMT - Instituto da Mobilidade e dos Transportes, I.P. (IMT) e o Laboratório Nacional de Engenharia Civil (LNEC) e destina-se a dar resposta à medida 25.92 do objetivo estratégico Infraestruturas Mais Seguras da Estratégia Nacional de Segurança Rodoviária

With the Strategic Action Plan for Road Safety for the 2021-2030 period, the European Union (EU) committed itself to halving the number of fatalities and serious injuries (MAIS 3+) when compared to the 2019 baseline. Considerable emphasis and concerns are put on improving road safety in urban areas, as well as reducing fatal and serious injuries on motorways and primary interurban roads. This is not surprising since these are also the roads that carry the bulk of traffic volumes in the EU. Notably, the publication of Directives 2008/96/EC and 2019/1936/EC set the stage for EU Member States (MS) to develop a comprehensive set of road infrastructure safety management (RISM) procedures that are applicable to these specific categories of roads. However, the Directives are not applicable to the remainder of the rural road network which provide a vital access and distribution function to road users. These secondary roads support crucial short to medium range journeys, often on long but low trafficked roads.This paper aims to help meeting the ambitious road safety targets of the EU by showing the important contribution of these secondary rural roads to the burden of road traffic injuries and fatalities, emphasizing the corresponding need for addressing specific road safety challenges, and highlighting various opportunities for advancing safety created by new technologies and consistent research and innovation.

Refere-se o presente relatório a um estudo de caracterização das distribuições de velocidades praticadas pelos condutores nas principais categorias de estradas de Portugal, sob condições diversificadas de tráfego e luminosidade, efetuado pelo LNEC no âmbito do projeto europeu Baseline, cofinanciado pela Comissão Europeia (CE). O projeto Baseline destinou-se ao desenvolvimento de indicadores do desempenho do sistema de transporte rodoviário na óptica da segurança (designados por KPI

The Portuguese Road Safety Authority (Autoridade Nacional de Segurança Rodoviária

The Portuguese Road Safety Authority (Autoridade Nacional de Segurança Rodoviária

Ce document est la traduction en langue française du manuel destiné à appuyer la mise en oeuvre d'audits de sécurité routière au projet d

O presente documento constitui o primeiro relatório referente à actividadedesenvolvida pelo Laboratório Nacional de Engenharia Civil (LNEC) e pela Faculdadede Ciências e Tecnologias da Universidade de Coimbra (FCT/UC) no âmbito doprojecto IRUMS

O presente documento constitui o quinto relatório referente à actividade desenvolvidapelo Laboratório Nacional de Engenharia Civil (LNEC) e pela Faculdade de Ciências eTecnologias da Universidade de Coimbra (FCT/UC) no âmbito do projecto IRUMS

The present document describes prediction models for accident, fatalities,serious injuries and killed and seriously injured victims, adjusted to bidirectionaldata of Portuguese motorway sections. The study was developed at LaboratórioNacional de Engenharia Civil (LNEC) in the scope of Workpackage 2 - SafetyImpact Assessment and Accident Prediction Model of the RIPCORD-ISERESTproject, carried out under the 6th European Framework Program. It covers theissues related to modeling accidents using the Negative Binomial modelregressions as well as detailed diagnostic checks of the models obtained.The data used were collected over a five year period, ranging from 1999 to2003. Several explanatory variables were measured concerning exposure,number of lanes, presence of an additional lane, lane widths, type and widths ofthe road

This document forms the Final Report of the Support study for the ex-post Evaluation of Directive 96/53/EC on Weights and Dimensions (W&D). The W&D Directive regulates the maximum weights and dimensions of vehicles for road transportation of goods and people in the EU. The Directive has been amended several times to promote more energy-efficient and sustainable transport. National derogations are allowed under the Directive, and some member states have taken advantage of this to permit larger capacity vehicles.This study, which ran from May 2022 until April 2023, was awarded by the Directorate-General for Mobility and Transport (DG MOVE) of the European Commission to a Consortium led by Ramboll Management Consulting along with Transport & Mobility Leuven, Panteia, LNEC, Apollo Vehicle Safety, and individual subcontracted experts. Methodologically, the study followed the process of a backward-looking Evaluation as set out in the Better Regulation Guidelines. This means that it covers five primary evaluation criteria (relevance, effectiveness, efficiency, coherence, and EU added value. Following a round of qualitative desk research and literature review, stakeholder consultation activities were conducted to gather primary data in relation to each of the evaluation questions. This included a large stakeholder survey, a limited number of targeted follow-up interviews, a workshop, and the analysis of a Public Consultation run by the Commission.One key tool guiding the evaluation process has been formed by the Intervention Logic (figure on the next page). The graphical representation of the tool brings together in a comprehensive way what the main problems (and underlying drivers) are related to the Directive, as well as the general, specific, and operational objectives contained in these. Finally, it shows the inputs used as well as the outputs produced and the results and impacts ultimately brought about by it. The links between specific elements are shown with arrows.This has been used in conjunction with an Evaluation Matrix setting out 17 main Evaluation Questions (EQs), as well as more operational sub-questions, indicators, judgment criteria, data sources, and analytical approach used.

This Impact Assessment accompanied a legislative proposal for the revision of Council Directive 96/53/EC on the maximum dimensions and weights of certain road vehicles in national and international traffic (the Weights and Dimensions Directive). The revision aimed to support the EU

The main objective of the project was the benchmarking of road safety performances and developments of ten Latin American countries.The comparison allowed to identify the similarities and differences between countries, not only on the number of crashes and casualties, but also on the factors, circumstances and events that influence the risk of a crash and the severity of its outcome. The analysis was performed in the following areas

Neste relatório é proposta a estrutura organizacional para realização das contagens tendentes ao recenseamento de tráfego rodoviário na rede de estradas interubanas da Argélia, incluindo o dimensionamento do parque de equipamento de contagem a usar, sua configuração (cntagens permanentes e temporárias), bem como a avaliação dos prazos de realização, em função da dimensão das equipas encarregadas da colocação e exploração dos equipamentos nos trechos da rede rodoviária.

The European Conference of Transport Research Institutes (ECTRI) is an international non

The research reported in this paper is part of the R&D project COST-TRENDs, funded by the Portuguese Foundation for Science and Technology. It presents a strategic assessment study of the hinterland connections centred in the Port of Sines, in Portugal, that integrates the core network corridor of the Trans-European Transport Network (TEN-T) designated as the Atlantic corridor. The study comprised the analysis of trends of maritime freight costs until 2020 and the assessment of alternative intermodal freight transport options to reduce costs along the multimodal transport chains. The options evaluated focused in the Iberian section of the Atlantic corridor and included the combination of maritime-short sea shipping, maritime-rail, maritime-road and, also, rail-air modes. The study estimated several key performance indicators for each option which aim to provide useful inputs to transport policy.

The literature shows that the development of the railway system in most European countries had a key role both in the evolution of urban systems and regional dynamics. On the other hand, it can be said that railway stations might act as important drivers for promoting sustainable land-use changes, namely of node and place functions which can be consistently balanced.The future Portuguese High-Speed Railway (HSR) network is considered as a major strategic transport scheme at both the Iberian and national levels. Its first stage comprises three routes. Of these, one links the Lisbon Metropolitan Area with the Spanish border of Badajoz, being an integral part of the HSR between both Iberian capitals, whereas the other two form the Atlantic Axis, encompassing a system of cities ranging from Lisbon to Porto, an from the latter point to Braga, Vigo and Coruña, concentrating nearly 80% of the whole Portuguese population, and serving an area generating about 90% of Portugal