Regional Transportation Authority Intelligent Transportation Systems

The purpose of this research was to define the functional requirements to implement ITS projects, which will lead to implementation of demonstration projects.  If successful, these ITS projects have the potential to improve service and information to customers as well as improve operations and reduce costs to the service boards: CTA, Metra and Pace.

Principal Investigator(s):

Joseph DiJohn


Joseph DiJohn
Jung-Taek Lee




The objective is to provide RTA staff with technical assistance in the development of requests for proposals, proposal evaluation and contract management assistance for various regional Intelligent Transportation Systems (ITS) projects.



The RTA has a vision of region-wide ITS projects to improve vehicle operations, safety and traveler information to the region’s transit riders.  Below is a list of regional projects being undertaken by the RTA:

  • Transfer Connection Protection, where a vehicle is held for transferring passengers.
  • Active Transit Station Signs, where electronic signs display next bus or train at stops or platforms.
  • Parking Management Systems, electronic designation and information to motorists at park-and-ride locations.
  • Regional Transit Signal Priority, or the giving or extending a green signal to a bus under certain circumstances.
  • Regional Transit Intelligent Transportation Systems Plan, which will implement the Illinois Transit Hub, a component of the Gary-Chicago-Milwaukee Corridor.

Expected Results or Products:

Requests for proposals were developed and put out to bid by RTA resulting in a definition of functional requirements for the implementation of ITS projects. The Active Transit Station Signs project resulted in a planned demonstration at several stations on the CTA.  Likewise, the Parking Management Systems project will result in a demonstration at several Metra commuter rail station parking lots.  The Regional Transit Signal Priority project resulted in a regional traffic signal inventory locating 6,700 traffic signals in the six-county region.  The project also undertook a location analysis resulting in the identification a dozen and a half priority corridors for further analysis and model simulation to determine the impact of various priority types on transit operation and traffic in the corridor.  The VISSIM model development allows for the simulation of traffic impacts under differing traffic signal and transit operation scenarios.

NOTE: A report or paper from this research is not immediately available.


P.S. Sriraj
Urban Transportation Center
University of Illinois at Chicago
412 South Peoria Street, Suite 340
Chicago, IL 60607
Voice: (312) 413-7568
Fax: (312) 413-0006


Regional Transportation Authority (RTA)
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