Provide at least the recommended minimum distance between a GPS antenna and a radio antenna on a transit vehicle.

A rural ITS demonstration in Poinciana, Florida.

December 2010

Background (Show)

Lesson Learned

Radio communications are central to the transit system because they allow the various system components, such as Automatic Vehicle Location (AVL), Mobile Data Terminal (MDT), and dispatch, to communicate with each other. Delays or error in data transmission can compromise operations and systems performance. The following guidance and lessons learned were highlighted during the demonstration to simplify the installation and implementation process.
  • Provide at least the recommended minimum distance between the GPS antenna and radio antenna on transit vehicles. There are recommended minimum distances for specific vehicles. Additional spacing is encouraged.
  • Confirm that a vehicle's wiring harness can be connected to the MDT using available documentation. The MDT needs to have a connection between itself and the vehicle's digital odometer in order to provide information to the AVL system. Installation will be problematic if the vehicle's wiring harness does not have color coded wires or is not fully documented.
  • Protect the MDT. The placement of the MDT should be protected to avoid damage caused by passengers boarding the vehicle.
Overall, the demonstration project found that increased interoperability between agencies can improve operations. Customer service staff, dispatchers, and drivers interviewed agreed that the project improved paratransit operations and the service was carrying more passengers more efficiently.

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Central Florida Regional Transportation Authority d.b.a. LYNX & Polk County Transit Services (PCTS) Rural Intelligent Transportation System Demonstration Project

Author: Schueger,Joe; Bill Hearndon; Rob Gregg; Darrell Smith; Emily Faulkner; Paul Simmons; Ivan Maldonado; Sunit Duodem; Tahira Faquir; LaChant Barnett; and Patricia Whitton

Published By: U.S. DOT Federal Transit Administration

Source Date: December 2010

Other Reference Number: FTA-FL-26-7035-2010.01

URL: http://www.fta.dot.gov/documents/LYNX-PCTS_RuralITS_Demonstration_Report_508(1).pdf

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Lesson ID: 2012-00632