Best Practice

BEST PRACTICE:

H3−2: Using a Communications Center to Provide Real−Time Traffic Information to the Public

DESCRIPTION:

The Illinois Department of Transportation (IDOT) Communications Center for the Chicago metropolitan area collects and distributes real−time traffic information for a portion of their Interstate routes. The traffic information is generated by their traffic management center. In addition, construction and maintenance work zone lane closure information is updated on at least a daily basis. The real−time information is broadcast on highway advisory radio and is continuously sent to the media and traffic information service providers via automatic direct feed. The information is also available by toll−free phone and over the Internet.

REASON(S) FOR ADOPTING:

While free−flow traffic cannot always be attained, the traveling public does want to minimize their travel time. By obtaining accurate real−time traffic information, motorists can make informed route decisions and help to balance the demand on the system.

PRIMARY BENEFIT(S):

Informed motorists can select the route(s) that will provide the best travel time. Because the information is real−time, motorists can adjust their routes even while en route, to avoid traffic−delaying incidents. In addition to providing improved travel times, such route adjustments help to alleviate demand and assist in traffic flow recovery from incident−related congestion.

MOST APPLICABLE LOCATION(S)/PROJECT(S):

Most applicable on a systematic basis to larger urban areas that have several route choices. However, to a lesser degree, the concept may have application in other areas or for a specific project.

STATE(S) WHERE USED:

Illinois

SOURCE/CONTACT(S):

Jeff Galas, Bureau of Traffic, Illinois DOT District 1
Phone: (708) 524−2145
E−mail: jeff.galas@illinois.gov