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EMBARQ BRT / Busways and Traffic Safety Nicolae Duduta, Claudia Adriazola, Dario Hidalgo, Luis Antonio Lindau, Rebecca Jaffe
EMBARQ
BRT / Busways and Traffic Safety
Nicolae Duduta, Claudia Adriazola, Dario Hidalgo, Luis Antonio Lindau, Rebecca Jaffe
Main findings: Overall safety impact of a BRT
Macrobús, Guadalajara
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Citywide crashes
Before BRT During BRT construction After start of operations
Main findings: Overall safety impact of a BRT
Av. Caracas, TransMilenio
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1996 1998 2000 2002 2004 2006 2008 2010
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Fatalities on corridor Tendency without TransMilenio Tendency with TransMilenio
Main findings: Overall safety impact of a BRT / Busway
Not all systems have had a positive impact on safety
Cristiano Machado Busway, Belo Horizonte Corridor with the highest crash frequency citywide
BRTS, Delhi
Initial increase in fatalities after the implementation of the bus system
Main safety issues on BRT and Busway corridors
Pedestrians crossing in mid-block
Av. Caracas, TransMilenio
Metrobus Line 2, Mexico City
Vehicle speeds
Road width
Pedestrian infrastructure
Factors influencing crash frequencies
Counterflow
Counterflow lanes were strongly correlated with higher
crash frequencies across all our models (p<0.001)
Factors influencing crash frequencies
Location of bus lanes
Central median
Shorter pedestrian crossings
Fewer mixed traffic lanes
Some 4-way intersections turned into T junctions
Main safety issues on BRT and Busway corridors
Common crash types
The global picture of safety on BRT and Busways
Fatalities by road user type
Pedestrians 54% Car occupants
23%
Motorcyclists 10%
Bicyclists 5% Other
8%
The safest place to be on a bus corridor is inside the bus
The most dangerous: walking to the bus station
Main findings
Factors influencing crash frequencies on bus corridors
Speed
Speeding was the most common contributing factor listed in police crash reports for the Metrobus system in Mexico City
Factors influencing crash frequencies
Street width and intersection size and complexity
Metrobus Line 1, Mexico City
Road width and complexity of intersections were the most important predictors of crash frequencies.
Safety issues on curbside bus corridors
Pedestrians walking in the bus lanes
Av. Caracas, TransMilenio
Metrobus Line 2, Mexico City
Safety issues on curbside bus corridors
Right turns across the bus lanes
Av. Caracas, TransMilenio
Metrobus Line 2, Mexico City
BRT / Busways and Traffic Safety
Conclusions
The main issues to consider when designing a BRT are:
Pedestrians crossing in mid-block
Left or right turns across the bus lanes
Avoiding counterflow
Designing simple, narrow intersections
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