Intelligent Transportation Systems in Headway-Based Bus Service (2021)

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83   Survey Results Tables A P P E N D I X B The tables provide more detail about how transit agencies use each of the ITS technologies to support HBS. How APC Is Used to Support HBS Count Collect passenger counts 8 Track vehicle loading 2 Other 2 Total responses 12 How AVL Is Used to Support HBS Count Track bus location 8 Provide passenger information 8 Estimate headways 6 Record bus trajectories 6 Total responses 28 How CAD Is Used to Support HBS Count Respond to incidents 9 Monitor headways 8 Implement control strategies 8 Total responses 25 How EFP Is Used to Support HBS Count Collect passenger counts 7 Not used 1 Other 2 Total responses 10 Table B-1. How automatic passenger counts are used to support headway-based service. Table B-2. How automatic vehicle location is used to support headway-based service. Table B-3. How computer-aided dispatch is used to support headway-based service. Table B-4. How electronic fare payment is used to support headway-based service.

84 Intelligent Transportation Systems in Headway-Based Bus Service How SS Is Used to Support HBS Count Data saved for later analysis and/or enforcement 9 Viewed by dispatchers if incidents reported 3 Track vehicle loading 1 Real-time traffic conditions for dispatchers and supervisors 1 Total responses 14 Information Communicated via Smartphone Application Count Real-time bus arrivals 9 Scheduled bus arrivals 7 Incident and service disruptions 7 Total responses 23 How TSP Is Used to Support HBS Count Buses behind schedule can request priority 4 All buses request priority 2 Buses behind can request priority 1 Buses behind are denied priority 1 Other 2 Total responses 10 HBS ITS Vendors Count ACS/Conduent/Orbital 5 Trapeze 5 Opticom 4 Clever Devices 3 Swiftly 2 INIT 1 Total responses 20 Information Communicated via Passenger Information Systems Count Scheduled bus arrivals 8 Real-time bus arrivals 8 Incident and service disruptions 2 Total responses 18 Table B-5. Information communicated via passenger information systems. Table B-6. How security systems are used [to] support headway-based service. Table B-7. Information communicated via smartphone application. Table B-8. How transit signal priority is used to support headway-based service. Table B-9. Headway-based service ITS vendors.

Survey Results Tables 85   Boarding Limit Imposition Rule Count Headway deviation 3 Passenger count 2 Total responses 5 Software Update Frequency Count More than once per 3 months 1 Once per 6 to 12 months 2 Once per 12 to 36 months 2 Less than once per 36 months 1 Only if issues detected 2 Total responses 8 Skip Stop Rule Count Headway deviation 3 Passenger count 3 Total responses 6 Table B-10. Skip stop rule. Table B-11. Boarding limit imposition rule. Table B-12. Software update frequency.

Abbreviations and acronyms used without definitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FAST Fixing America’s Surface Transportation Act (2015) FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) TCRP Transit Cooperative Research Program TDC Transit Development Corporation TEA-21 Transportation Equity Act for the 21st Century (1998) TRB Transportation Research Board TSA Transportation Security Administration U.S. DOT United States Department of Transportation

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