Performance Measure

Variance of travel time. Variance is the sum of the squared deviations from the mean. This can also be calculated as the standard deviation of travel time. Standard deviation is the square root of variance.

Associated Objectives

Reduce the variability of travel time on specified routes by X percent during peak and off-peak periods by year Y.

Service Packages that Support the Performance Measure

VS05-Curve Speed Warning
TM04-Connected Vehicle Traffic Signal System
VS08-Queue Warning
VS10-Restricted Lane Warnings
VS09-Reduced Speed Zone Warning / Lane Closure
TM21-Speed Harmonization
TI07-In-Vehicle Signage
TM03-Traffic Signal Control
TM05-Traffic Metering
TM06-Traffic Information Dissemination
TM08-Traffic Incident Management System
TM20-Variable Speed Limits
TM22-Dynamic Lane Management and Shoulder Use
MC04-Winter Maintenance
MC06-Work Zone Management
TI01-Broadcast Traveler Information
TI02-Personalized Traveler Information
TI03-En-Route Guidance

Associated Goals

Improve the efficiency of the surface transportation system
Improve the resiliency and reliability of the surface transportation system

Planning Factors

G. Promote efficient system management and operation;
I. Improve the resiliency and reliability of the transportation system and reduce or mitigate stormwater impacts of surface transportation;


Planning for Operations Desk Reference