Publications

Channelized right-turn lanes (CRTLs) improve traffic flow efficiency, enabling right-turning drivers to bypass traffic lights at signalised intersections (for right-hand drive countries). Many CRTLs provide crossing facilities for pedestrians and cyclists. Previous studies examining the safety performance of CRTLs indicate that they increase overall safety levels but hint that safety issues regarding vulnerable road users exist. This study ...

This dissertation looks into the use of surrogate safety indicators on traffic conflicts that involve Vulnerable Road Users.

Most existing traffic conflict indicators do not sufficiently take into account the severity of the injuries resulting from a collision had it occurred. Thus far, most of the indicators that have been developed express the severity of a traffic encounter as their proximity to a collision in terms of time or space, This paper presents the theoretical framework and the first implementation of Extended Delta-V as a measure of traffic conflict ...

Traffic safety has mainly been studied using crash data, which have some important shortcomings, including random variation because of the low number of crashes, underreporting and the limited availability of behavioural and situational aspects about the crashes. Therefore, there is a need for surrogate safety measures. Observational studies do not suffer from the aforementioned limitations, and can contribute to the understanding of the complex ...

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Train timetables are built such that trains can drive without any delay. However, in real-time, unexpected events such as overcrowded platforms or small mechanical defects can cause conflicts, i.e., two trains requiring the same part of the infrastructure at the same time. Currently, such conflicts are typically resolved by experienced dispatchers. However, it is impossible for them to fully anticipate the impact of their actions on the entire ...

Train timetables are built such that trains can drive without any delay. However, in real-time, unexpected events such as overcrowded platforms or small mechanical defects can cause conflicts, i.e., two trains requiring the same part of the infrastructure at the same time. Currently, such conflicts are typically resolved by experienced dispatchers. However, it is impossible for them to fully anticipate the impact of their actions on the entire ...