Simulation-Based Framework for Estimating Crash Modification Factors (CMFs): A Case Study for ITS Countermeasures
Table 3
Description of proposed ITS countermeasures.
Countermeasures
Description
Equipment
Ramp Metering (RM)
Implementation of traffic control signals at freeway on-ramps that control the rate of vehicles entering the freeway
Detector, Ramp Signal
Variable Speed Limit (VSL) Assignments
Include implementation of communication platform to show the upstream drivers current advisory speed limit for certain time durations based on downstream congestion
Detector, VMS
Junction Controls (JC)
Regulate flow of traffic onto the mainline and facilitate ramp traffic to enter on freeway
Detector, VMS
Dynamic Lane Assignment (DLA)
Indicates downstream lane closures (due to congestion, accidents, work zones, or debris) and facilitates upstream drivers to change lane in advance
