Driving Safety Assurance Method in Work Zone Crossovers of Highway Reconstruction and Expansion Project

Table 3

Statistical method of key behavior parameters.

Key behavior parameters	Statistical method
Initial speed ()	The instantaneous speed when the vehicle’s rear passes through the start line of the entrance or exit by-pass
Slowdown amplitude ()	The difference between initial speed and minimum speed in work zone crossover
Deceleration (a)	15% percentile deceleration in the work zone crossover
Deceleration rate (J)	15% percentile deceleration rate in the work zone crossover
Maximum deceleration rate difference ()	The difference between maximum and minimum deceleration rate in the work zone crossover
Maximum steering wheel angel rate (S)	The maximum steering wheel angel rate in the work zone crossover