Research Article

Steady-State Car-Following Time Gaps: An Empirical Study Using Naturalistic Driving Data

Table 2

Mean and COV for all drivers for all speed intervals.

Driver No.Speed Interval (km/h)
≥ 108

124Mean (s)2.502.222.312.831.051.291.04
COV (%)11.930.029.143.453.750.462.9
304Mean (s)NANA1.821.361.211.281.65
COV (%)NANA25.835.232.535.635.5
316Mean (s)2.532.672.382.011.551.481.48
COV (%)9.914.018.928.928.930.926.1
350Mean (s)2.602.592.462.282.081.501.55
COV (%)9.015.027.522.332.031.821.9
358Mean (s)2.542.432.071.951.741.681.86
COV (%)9.919.721.321.123.223.923.7
363Mean (s)2.091.771.331.221.101.241.42
COV (%)10.221.439.427.133.838.129.0
462Mean (s)NA1.531.280.930.810.980.97
COV (%)NA20.812.719.516.743.963.8