Synthesis of Information Related to Transit Practices. Topic SA-56. Use of Automatic Vehicle Monitoring (AVM) and Vehicle Health Monitoring/Diagnostic Systems by Transit Agencies

Automatic Vehicle Monitoring (AVM) is a vehicle health diagnostic system that integrates the monitoring of an array of on-board components in order to assist in the early identification of potential mechanical problems and thus support effective maintenance. These are also sometimes referred to as multiplex vehicle health monitoring systems. Sensors monitor the performance of various engine and vehicle components and systems. This functionality takes on different forms and levels of sophistication or integration: (1) An integrated comprehensive AVM monitoring, diagnostic, and reporting system that is built into the maintenance system. AVM may be fully integrated with the on-based CAD/AVL system, or a stand-alone system. (2) Vehicle engine and component suppliers provide their own independent diagnostic systems used by maintenance departments. (3) A limited number of engine sensors integrated into the Automatic Vehicle Location (AVL) system that only provide real-time alarms of faults or critical failures (e.g., temperature, pressure, etc.).  AVM can be used to identify likely mechanical failures and make maintenance more accurate or efficient. The monitoring systems provide an itemized report of all vehicle faults, allowing the maintenance department to prioritize repairs. Early identification of faults on a daily basis through expanded onboard monitoring allows the agency to respond more quickly with preventive maintenance (PM) action, which typically would not take place until the next scheduled PM interval or after a sudden breakdown occurred. The system allows direct assignment of personnel to required repair actions, thereby eliminating major costs associated with diagnostic time. This synthesis will document the current use and benefits of using AVM as part of enhanced data-driven bus maintenance practice. Information To Be Gathered (Not an exhaustive list): (1) What is the extent of use of comprehensive AVM or vehicle health monitoring systems in the transit industry? (2) Are these systems integrated into the AVL/ITS platform, or are they stand-alone? What are the perceived benefits of each alternative? (3) How many transit systems rely solely on the diagnostic systems provided by individual component suppliers, as opposed to using comprehensive AVM systems as part of their maintenance? (4) How have AVM systems changed maintenance procedures where they have been deployed? (5) If AVM systems are not utilized what maintenance procedures are followed by the agencies?  


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  • Status: Active
  • Funding: $55000
  • Contract Numbers:

    Project J-07, Topic SA-56

  • Sponsor Organizations:

    Transit Cooperative Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC    20001

    Federal Transit Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Garcia-Colberg, Mariela

  • Performing Organizations:

    ,   Germany 

    AECOM Technical Services, Inc.

    Minneapolis,   United States 
  • Principal Investigators:

    Zhong, Victor

  • Start Date: 20230308
  • Expected Completion Date: 20240909
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01846751
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project J-07, Topic SA-56
  • Files: TRB, RIP
  • Created Date: May 24 2022 11:06AM