Journal of Advanced Transportation / 2020 / Article / Tab 2

Research Article

An Approach for Handling Uncertainties Related to Behaviour and Vehicle Mixes in Traffic Simulation Experiments with Automated Vehicles

Table 2

Recommended driving behaviour parameters for following in Vissim.

Parameter (Wiedemann 99 following model)Driving logic
Rail-safeCautiousNormalAll-knowingDef

CC0—standstill distance (m)1.51.51.511.5
CC1—spacing time (s)1.51.50.90.70.9
CC2—following variation (m)00004
CC3—threshold for entering “following” (s)−10−10−8−6−8
CC4—negative “following” threshold (m/s)−0.1−0.1−0.1−0.1−0.35
CC5—positive “following” threshold (m/s)0.10.10.10.10.35
CC6—speed dependency of oscillation (10−4 rad/s)000011.44
CC7—oscillation acceleration (m/s2)0.10.10.10.10.25
CC8—standstill acceleration (m/s2)233.543.5
CC9—acceleration at 80 km/h (m/s2)1.21.21.521.5

If “enforce absolute braking distance” is on, brick wall stop distance is guaranteed. See Vissim manual [48] for detailed description. Default values for Wiedemann99 following model in Vissim (conventional vehicles). If the followed vehicle is a conventional one, the follower maintains 0.9 s spacing time.

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