Effect of Warning System on Interactive Driving Behavior at Unsignalized Intersection under Fog Conditions: A Study Based on Multiuser Driving Simulation
Table 1
Interpretation of variables.
Stage
Definitions of behavioral measures
Notation
Approaching stage
Difference of two vehicles’ distance at the end point of the approaching stage
DD
Difference of two vehicles’ speed at the end point of the approaching stage
SD
Difference of two vehicles’ TTC at the end point of the approaching stage
TD
Speed at the end point of the approaching stage
IS
Decision stage
Travel time in the decision stage
DT
Initial decision at the action point
ID
Distance between the action point and intersection
APD
Time to the intersection at the action point
APT
Adjustment stage
Average acceleration (deceleration) rate of the initial action.
AA
Duration time of the initial action
AT
The lowest speed of the entire adjustment stage
LS
Finial speed at the end point of the adjustment stage
FS
Postencroachment time at the end point of the adjustment stage
