Light Rail Vehicle Collisions with Vehicles at Signalized Intersections

Pecheux, Kelley Klaver; Saporta, Harry

doi:10.17226/14215

Cited by 9 publications

(17 citation statements)

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“…In order to make the tramway transportation system safer, a careful investigation should be conducted into the most common accident causes to find technical solutions for reducing accident risks to the utmost. In all cases, left-turn manoeuvres at intersections by themselves account for 47% of the total accidents involving cars and trams [15]. Such an occurrence can be attributed to the following major causes (Table 2) [16]:…”

Section: Growth Trend In the Tramway Transportmentioning

confidence: 99%

Tramways in Urban Areas: An Overview on Safety at Road Intersections

Guerrieri

2018

Urban Rail Transit

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Although the accident number involving trams is comparatively very limited to the total road accident number, the consequences of tram crashes are very serious, especially when pedestrians are run over. The new power supply technologies (e.g. catenary-free systems) allow to build tram networks, even in old town centres and pedestrian areas, with additional increased risk of pedestrian casualties. This will require specific design solutions and traffic regulations for road safety as described in this paper, with particular regard to vulnerable users (i.e. pedestrians and cyclists), especially near intersections and pedestrian crossings. Therefore, the research analyses the road accident rate and its evolution in the last 10 years with specific focus on Italian tramways. The main risk conditions and the strategies used worldwide to improve the safety of tramway system in the urban context are described. The main countermeasures to reduce accident risks are aimed at better warning road users of specific risk conditions. Other countermeasures are designed to install suitable facilities on road platforms for better informing users of tramway system, for limiting or temporarily prohibiting turning movements or manoeuvrings and for properly channelling pedestrian and vehicle flows with the purpose to avoid or reduce interference with trams.

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Section: Growth Trend In the Tramway Transportmentioning

confidence: 99%

Tramways in Urban Areas: An Overview on Safety at Road Intersections

Guerrieri

2018

Urban Rail Transit

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“…Little research on the effectiveness of the safety measures currently being used has been conducted recently. The most recent research was conducted for TCRP Synthesis 79: Light Rail Vehicle Collisions with Vehicles at Signalized Intersections (1). This report includes a state-of-the-practice review, as well as findings from interviews with seven transit agencies with operational LRT systems.…”

Section: Introductionmentioning

confidence: 99%

Driver Comprehension and Assessment of Traffic Control Devices at Signalized Intersections Interfacing with Light Rail Transit

Pecheux¹,

Golembiewski²

2011

Transportation Research Record: Journal of the Transportation R

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Signalized intersections that interface with light rail transit (LRT) pose a unique challenge to traffic operations and safety. Although progress toward mitigating light rail vehicle–motor vehicle crashes has been made, many agencies still face safety issues at these intersections. Few empirical studies of the effectiveness of the safety measures currently being used have been conducted. Safety measures have not been tested with drivers; rather, the measures they have evolved over time through practice. The objectives of this research were to assess driver comprehension and to explore drivers’ perceptions and opinions of a variety of traffic control devices (TCDs) that were or that might be used at signalized intersections that interface with LRT. The research approach was to present simulated scenes to drivers with a variety of intersection scenarios and TCDs in a focus group setting. The results showed that drivers had preferences for TCDs at these intersections. Although existing TCDs are understood and generally liked, ongoing issues with safety suggest that improvements can still be made. The use of green arrow signal displays or supplemental pavement markings could improve driver situational awareness at some intersections. Enhancements to the existing Manual on Uniform Traffic Control Devices W10-7 (i.e., train icon) activated blank-out sign, such as adding the word “train” or alternating the train icon with the no left turn icon, could result in increased driver compliance. Finally, providing an active warning device on the cross street, such as the W10-7 sign, could increase safety by making drivers and pedestrians more aware of the arrival of a train.

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“…Although crash frequency modeling in traffic safety literature is rich and diverse overall, very few studies focus on the relationship between public transit and road safety ( 2 ). Furthermore, those that focused on ground public transit examined the impact of specific transit infrastructure improvements [e.g., guardrails to prevent jaywalking on light rail corridors or dedicated bus lanes ( 3 ) and protected phases for left turns that have to cross bus rapid transit (BRT) lanes with priority ( 4 )] on road safety rather than the impact of a bus route without isolating the infrastructure. Although various studies have suggested safety countermeasures for transit, there is little quantitative evidence on their effectiveness ( 5 ).…”

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confidence: 99%

“…Although various studies have suggested safety countermeasures for transit, there is little quantitative evidence on their effectiveness ( 5 ). Most studies have focused on light rail transit ( 5 ) and those that do consider buses have primarily focused on BRT systems ( 3 – 7 ).…”

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confidence: 99%

“…More advanced studies have developed statistical models, for example, negative binomial ( 3 , 7 ) and mixed effects negative binomial models ( 9 ). These studies have found that the implementation of infrastructure related to BRT systems (e.g., rightmost lanes dedicated to bus lanes without physical division that act as a buffer for runaway crashes, and separated bus corridors that also serve as a median) reduces crash frequencies in the corridors where buses previously shared the road with other types of vehicles ( 3 – 7 ). However, novel types of crashes may occur as a result of the new traffic conditions that these infrastructure elements generate.…”

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confidence: 99%

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Impact of Bus Routes on Crash Frequency in Metropolitan Areas

Guadamuz

Gayah

Paleti

2020

Transportation Research Record: Journal of the Transportation R

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Although research in transportation safety is abundant, very few studies have examined the relationship between public transportation systems and safety performance. Most studies on the subject have focused on the impact of infrastructure countermeasures related to bus rapid transit systems. However, the impact of city-street buses on safety performance remains unknown. This research explores the pseudo-causal impact of the presence of bus routes and bus traffic on observed crash frequencies by developing safety performance functions (SPFs) that include the presence of a bus route and estimated weekly bus traffic as input variables. The SPFs were developed using the propensity score–potential outcomes (PS-PO) framework to reduce unobserved biases that might exist between segments that have and do not have bus routes. The results suggest that PS-PO reduced standardized biases significantly, allowing stronger causal inferences to be obtained. The results revealed that the presence of a bus route was associated with a 27% increase in expected crash frequency after controlling for other infrastructure-related variables. Weekly bus traffic was also found to be a significant predictor of overall crash frequency, with a 1% increase in ] weekly bus traffic associated with an expected increase in crash frequency of 0.016%. A non-parametric approach is also presented for comparison with the results from the SPFs; this confirmed the findings from the parametric method used.

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Light Rail Vehicle Collisions with Vehicles at Signalized Intersections

Cited by 9 publications

References 0 publications

Tramways in Urban Areas: An Overview on Safety at Road Intersections

Tramways in Urban Areas: An Overview on Safety at Road Intersections

Driver Comprehension and Assessment of Traffic Control Devices at Signalized Intersections Interfacing with Light Rail Transit

Impact of Bus Routes on Crash Frequency in Metropolitan Areas

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