System Efficiency: Duration of Congestion (Objective Category)

These objectives focus on managing the duration of recurring congestion (roadway or intersection) on the transportation system. The duration of recurring congestion represents the length of time that a facility is congested. Common expressions of recurring congestion are volume-to-capacity (V/C) ratio and level of service (LOS), which is measured in terms of travel speed or delay. In areas where there is extensive congestion, the degree or intensity of congestion can be revealed, particularly for areas that experience significant congestion (spatially and/or temporally).

Associated Objectives and Performance Measures

Objective Performance Measure
Reduce the daily hours of recurring congestion on major freeways from X to Y by year Z. Hours per day at LOS F or V/C > 1.0 (or other threshold).
Reduce the number of hours per day that the top 20 most congested roadways experience recurring congestion by X percent by year Y. Hours per day at LOS F or V/C > 1.0 (or other threshold).

Associated Planning Factors and Goals

Planning Factor Goal
D. Increase the accessibility and mobility of people and for freight; Achieve a significant reduction in congestion
G. Promote efficient system management and operation; Improve the efficiency of the surface transportation system

Associated Service Packages

Service Package
MC06: Work Zone Management
ST06: HOV/HOT Lane Management
TI06: Dynamic Ridesharing and Shared Use Transportation
TM03: Traffic Signal Control
TM04: Connected Vehicle Traffic Signal System
TM05: Traffic Metering
TM06: Traffic Information Dissemination
TM07: Regional Traffic Management
TM09: Integrated Decision Support and Demand Management
TM15: Railroad Operations Coordination
TM16: Reversible Lane Management
TM20: Variable Speed Limits
TM21: Speed Harmonization
TM22: Dynamic Lane Management and Shoulder Use
VS14: Cooperative Adaptive Cruise Control
VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
VS16: Automated Vehicle Operations


Planning for Operations Desk Reference

Since the mapping between objectives and service packages is not always straight-forward and often situation-dependent, these mappings should only be used as a starting point. Users should do their own analysis to identify the best service packages for their region.