Research Article

Real-Time Incident Detection and Capacity Estimation Using Loop Detector Data

Table 4

PEMS calibrated fundamental diagram parameters [40, 41].

Traffic flow parametersValue

Free flow speed (mph)65
Capacity (veh/hr/lane)1861
Jam density (veh/mile/lane)168
Critical density (veh/mile/lane)29
Shockwave speed (mph)14