HOV violation rates Studentâs Two-Sample (Unpaired) t testġ. Section Speeds = 1 foot directional miles with left shoulders 45 mph1 Fisherâs Test Section and areawide Peak hour, a.m./p.m. Total Delay, Persons The excess travel time used on a trip, facility, orĭelay per Vehicle Total freeway delay divided by the number of Total Delay, Vehicles The excess travel time used on a trip, facility, orįreeway segment beyond what would occur under Travel Time Index The ratio of the actual travel rate to the ideal travel Minutes Specific points on a section or a Travel Time The average time consumed by vehicles Metric Definition Units Geographic Scale Time ScaleĪverage (Typical) Congestion Conditions (Quality of Service) Recommended core freeway performance measures. Tied into the mission of the transportation agency.ġ2 NCHRP Web-Only Document 97: Guide to Effective Freeway Performance Measurement: Final Report Service (outcome) and activity-based (output) performance measures must be linked together and Measures, while âActivity-Basedâ is more apt for the output category of measures. In the table, âQuality of Serviceâ denotes a more intuitive term for the outcome category of The appropriate geographic and temporal scales are listed for each metric.
Performance measures that can be used to evaluate how well an ICM project meets its goals and
Projects where freeway congestion is often the driver for these types of project implementations.Īdapted from NCHRP Web-Only Document 97, TABLE D.1 provides a wide variety of potential This reportâs guidance can lend itself to ICM
Quality, environmental, and customer satisfaction. Performance were considered, including congestion, mobility, safety, operational efficiency, ride Provides transportation engineers and planners assistance in developing and maintaining aĬomprehensive freeway performance-monitoring program. NCHRP Web-Only Document 97: Guide to Effective Freeway Performance Measurement12 Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.