System Performance, Freight and CMAQ

The Federal Highway Administration published the System Performance/Freight/CMAQ Performance Measures Final Rule on Jan. 18, 2017, with an effective date of May 20, 2017. It assesses the performance of the Interstate and non-Interstate National Highway System for the purpose of carrying out the National Highway Performance Program; assesses freight movement on the Interstate System; and assesses traffic congestion and on-road mobile source emissions for the purpose of carrying out the Congestion Mitigation & Air Quality Improvement Program.
Travel Time Reliability |
Four-Year Targets |
Percent of the person-miles traveled on the interstate that are reliable | 79% |
Percent of the person-miles traveled on the non-Interstate National Highway System that are reliable | 94% |
Freight Reliability
Freight Reliability |
Four-Year Targets |
Truck Travel Time Reliability Index (TTTR) | 1.46 |
Traffic Congestion Reduction
Traffic Congestion Reduction |
Baseline | Two-Year Targets | Four-Year Targets |
Percent of non-single occupancy vehicle travel | 27.3% | 26.7% | 27.7% |
Annual hours of peak-hour excessive delay per capita | 11.7 | 15.8 | 17.4 |
On-Road Mobile Source Emissions Reduction
Total Emissions Reduction |
Baseline | Two-Year Targets | Four-Year Targets |
Total Emissions Reductions (VOC) kg/day | 388.191 | 209.97 | 423.397 |
Total Emissions Reductions (PM10) kg/day | 41.385 | 23.900 | 47.800 |
Total Emissions Reductions (CO) kg/day | 6,006.652 | 2,583.027 | 5,213.589 |
Total Emissions Reductions (NOx) kg/day | 707.876 | 397.012 | 800.557 |