FHWA Congestion Reduction Metrics

Peak Hour Excessive Delay, January - December, 2017

PHED is measured as the sum of excessive delay (in hours) divided by the population and is calculated for drive times between 6-10 am and 4-8 pm, Monday through Friday.
Percent Non Single Vehicle Occupancy (SOV) Commute
Values calculated by dividing annual volume of SOV by total annual volume. Currently FHWA has calculated an average value of 1.7 persons per vehicle.


There is no penalty for Peak Hour Excessive Delay or Single Vehicle Occupancy measures.