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Journal of Advanced Transportation
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Journal of Advanced Transportation
/
2021
/
Article
/
Tab 4
/
Research Article
Evaluating the Safety Impact of Connected and Autonomous Vehicles with Lane Management on Freeway Crash Hotspots Using the Surrogate Safety Assessment Model
Table 4
Wiedemann 99 parameters.
Parameter (unit)
Short description
(m)
Standstill gap
(m)
Headway time
(m)
“Following” variation
(s)
Threshold for entering “following”
(m/s)
Negative “following” threshold
(m/s)
Positive “following” threshold
(10
−4
rad/s)
Speed dependency of oscillation
(m/s
2
)
Oscillation acceleration
(m/s
2
)
Standstill acceleration
(m/s
2
)
Acceleration at 80 km/h
VDES
Desired speed of vehicles