Vehicle Hours of Delay

Vehicle hours of delay­­-- measures the additional travel time experienced by a motorist beyond what would be experienced under uncongested conditions.

In general, delay along Florida’s SHS decreased by 8% during the peak hour from 2018 to 2019, but the decrease was most pronounced in the seven largest MPOs.

Methodology

Methodology: Vehicle Hours of Delay

Vehicle hours of delay was estimated on an hourly basis by determining the difference between delay threshold travel time and actual travel time along a facility. Delay threshold travel time/speed is considered the additional travel time experienced by a motorist beyond what would be experienced under uncongested conditions. The definition of uncongested conditions was defined as level of service “B”. Delay estimation considers unserved demand from the preceding hours for the time periods between 7:00 a.m. and 10:00 a.m. and between 4:00 p.m. and 7:00 p.m.

Calculation

`Σ ("Daily or Peak Travel Time-Travel Time at LOS B") × "Vehicle Volume"`

Reporting Periods

  • Peak Hour
  • Peak Period
  • Daily
  • Yearly

Sources

FDOT - Traffic Characteristics Inventory
HERE Technologies - Travel Time Data