Modeling Lane-Keeping Behavior of Bicyclists Using Survival Analysis Approach

Table 2

External factors and explanation.

Variable	Name	Type	Explanation
𝑋1	Effective width	Continuous variable	The effective width of bicycle lane
𝑋2	Travel speed	Continuous variable	The average travel speed for the survey internal
𝑋3	Car volume	Continuous variable	Car volume in the adjacent lane (veh/30 s)^a
𝑋4	Curb parking	Binary indicator	1 if there are curb parking cars along the bicycle lane, 0 otherwise
𝑋5	Retrograde motion	Binary indicator	1 if there are retrograde bicycles in the lane at the; observed interval, 0 otherwise
𝑋6	Safe gap	Binary indicator	1 if the adjacent lane is clear of moving car, 0 otherwise

^a“veh” is the abbreviation of vehicle.