Encontrados 11 documentos, a visualizar página 1 de 2
MobiWise: eco-routing decision support leveraging the internet of things
Aguiar, Ana; Fernandes, Paulo; Guerreiro, Andreia P.; Tomás, Ricardo; Agnelo, João; Santos, José Luís; Araújo, Filipe; Coelho, Margarida C.Eco-routing distributes traffic in cities to improve mobility sustainability. The implementation of eco-routing in real-life requires a diverse set of information, including different kinds of sensors. These sensors are often already integrated in city infrastructure, some are technologically outdated, and are often operated by multiple entities. In this work, we provide a use case-oriented system design for an...
Human stress during driving: correlation with road traffic externalities
Tomás, Ricardo; Macedo, Eloísa; Fernandes, José M.; Coelho, Margarida C.The evaluation of vehicle occupants (VO) stress level is a research topic with recent and increasing interest as researchers pursue to understand its correlation with other road traffic-related externalities (RTE), i.e., pollutants and noise emissions, road safety and traffic congestion, and ultimately design a framework able to optimize road networks while considering road stress. Road singularities (e.g., rou...
MobiWise: Eco-routing decision support leveraging the Internet of things
Aguiar, Ana; Fernandes, Paulo; Guerreiro, Andreia; Tomás, Ricardo; Agnelo, João; Santos, José Luís; Araújo, Filipe; Coelho, Margarida C.Eco-routing distributes traffic in cities to improve mobility sustainability. The implementation of eco-routing in real-life requires a diverse set of information, including different kinds of sensors. These sensors are often already integrated in city infrastructure, some are technologically outdated, and are often operated by multiple entities. In this work, we provide a use case-oriented system design for an...
Driving aggressiveness in hybrid electric vehicles: assessing the impact of dri...
Fernandes, Paulo; Tomás, Ricardo; Ferreira, Elisabete; Bahmankhah, Behnam; Coelho, Margarida C.Hybrid electric vehicles (HEV) have demonstrated energy benefits to road traffic networks, but a deeper understanding the correlation of driving volatility with their energy use and pollutant emissions is rather rare. This paper introduces an approach based on driver volatility measured by vehicle acceleration and jerk to estimate HEV emissions rates. Dynamic emission models represented by nine driving behavior...
Carpooling as an immediate strategy to post-lockdown mobility: a case study in ...
Tomás, Ricardo; Fernandes, Paulo; Macedo, Joaquim; Coelho, Margarida CabritaCarpooling is a mobility concept that has been showing promising results in reducing single occupancy use of private cars, which prompted many institutions, namely universities, to implement carpooling platforms to improve their networks sustainability. Nowadays, currently under a pandemic crisis, public transportation must be used with limitations regarding the number of occupants to prevent the spread of the ...
Automated driving behaviour impacts in mixed road traffic environment
Macedo, Eloísa; Tomás, Ricardo; Fernandes, Paulo; Coelho, Margarida C.; Bandeira, Jorge M.The increasing levels of automated functions in vehicles are expected to reshape the future of road transport. Soon, connected, automated and conventional vehicles will share the roads, and it is essential to understand the impacts of such new road environment under several components such as traffic performance, climate change, air quality. This paper is devoted to presenting a study focusing on a multi-criter...
Measuring impacts of “rat-running” driver behaviour in urban environment using ...
Macedo, Eloísa; Tomás, Ricardo; Primo, João; Coelho, Margarida C.On specific congested sites of cities, drivers, attempting to minimize their own travel time, use secondary roads instead of the main roads. This rat-running behaviour may affect network performance, but little research has been conducted in this topic. The present study explores rat-running network impacts and suggests evaluation of network performance in a global perspective with respect to travel time, pollu...
Quantifying road traffic emissions embedded in a multi-objective traffic assign...
Macedo, Eloísa; Tomás, Ricardo; Fernandes, Paulo; Coelho, Margarida C.; Bandeira, Jorge M.In a road network, drivers typically seek to minimize their own travel time, often affecting system-wide performance. With the increasing environmental awareness, for an efficient traffic assignment (TA), besides concerns with travel times, traffic managers should not neglect the system-wide level of both global and local pollutant emissions. Measuring road traffic emissions can be costly and different models b...
A comparative empirical assessment of roundabouts operations in rural areas: im...
Fernandes, Paulo; Tomás, Ricardo; Acuto, Francesco; Pascale, Antonio; Bahmankhah, Behnam; Guarnaccia, Claudio; Granà, Anna; Coelho, Margarida C.Increasing concern about global warming and air quality has meant an increasing use of energetic and environmental indicators in roundabout design. The main objective of this paper is to compare different rural roundabouts in terms of traffic performance, pollutant and noise emissions through an integrated empirical assessment. Field measurements were carried out with a light duty vehicle in single-lane (SL), c...
Real-time prevention tool integrating volatility and environmental impacts
Ferreira, Elisabete; Macedo, Eloísa; Fernandes, Paulo; Tomás, Ricardo; Bandeira, Jorge M.; Coelho, Margarida C.In Europe, the number of road traffic deaths and injuries is still far too high and the European Union is committed in improving road safety and move closer to the target of approaching zero road fatalities by 2050. For that purpose, new strategies based on the Safe System approach to preventing deaths and serious injuries for all road users should be developed. Road transport is a major source of pollutant emi...