initial applications for automated vehicles on exclusive roadways
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Initial Applications for Automated Vehicles on Exclusive Roadways. Advanced Transit Association Annual Technical Meeting January 11, 2009 Washington, DC Robert Johnson R. E. Johnson Consulting Rockville, Maryland www.REJConsult.com. Examples of Small Automated Road Vehicles. - PowerPoint PPT PresentationTRANSCRIPT
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Initial Applications for Automated Vehicles on Exclusive Roadways
Advanced Transit Association Annual Technical Meeting
January 11, 2009
Washington, DC
Robert Johnson
R. E. Johnson ConsultingRockville, Maryland
www.REJConsult.com
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Examples ofSmall Automated Road Vehicles
CyberCab: proposed by 2getthere which developed the first public automated road vehicle (ParkShuttle)
ULTra: scheduled to begin service in 2009 at Heathrow airport, London
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Alternative Interior Layouts and Service Concepts
Typical PRT– Two fixed seats– Two fold-down seats
– Could have pure PRT or some sharing
“Automated Microbus”– Four fixed seats– Two fold-down seats– More suitable for
shared operation
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Benefits of Exclusive Roadway
• Narrow -- 6 ft (1.8 m) or less wide
• Only need 6.5 ft (2.0 m ) vertical clearance
• Light duty construction
• Much safer without human drivers in other vehicles
• Much simpler control system
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Exclusive RoadwayElevated, At Grade, Under Existing Bridge
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ULTra System at Heathrow Airport
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Stations and Interchanges
• Similar to to ULTra system connecting Heathrow Terminal 5 to parking lot, because...
• Decision makers are very conservative
• Heathrow design suitable for a number of applications
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In Example Applications, Stations are on Loop at End of Two-Way Line
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Application Characteristics
• Small system -- 1 to 4 lane miles (2 to 6 lane km ) of “guideway”
• Extends some other mode
– Rail Transit: system provides rail station access
– Airport: provides landside circulation
• Auto congestion an issue, but...
• Low enough density in immediate area that space available for guideway
• Limited snow/ice, so can melt with guideway heating
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Applications in Suburban Washington, DC
• Montgomery College Connector -- College is next to heavy rail line, but between stations
• DANAC Station Connector -- Provides access to station on planned BRT or light rail system
• College Park Engineering Connector -- Serves existing heavy rail and planned BRT or light rail
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Space Under Route 1 Bridge May be Usablefor Automated Vehicle Lanes
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Next Steps in Analyzing an Application
• Is guideway layout really feasible?
• Compute infrastructure cost
• Determine station-to-station (free flow) travel time and average wait time
• Find ridership by running existing 4-step model for area with automated system in place
• Determine fleet size, VMT, system costs, and benefit/cost ratio
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For more information about the applicationsshown here and others, please see:
www.AutoRoadVehicles.com