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. (Performance Measure*)

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

ATIS01-Broadcast Traveler Information
ATIS02-Interactive Traveler Information
ATIS04-Dynamic Route Guidance
ATIS09-In Vehicle Signing
ATIS10-Short Range Communications Traveler Information
ATMS03-Traffic Signal Control
ATMS04-Traffic Metering
ATMS06-Traffic Information Dissemination
ATMS08-Traffic Incident Management System
ATMS22-Variable Speed Limits
ATMS23-Dynamic Lane Management and Shoulder Use
MC06-Winter Maintenance
MC08-Work Zone Management
MC10-Maintenance and Construction Activity Coordination

Associated Goals

Increase operational efficiency and reliability of the transportation system

Planning Factors

G. Promote efficient system management and operation;

Source

Planning for Operations Desk Reference