“designing transit for maximum ridership and minimum cost”: personal rapid transit

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“Designing Transit for Maximum Ridership and Minimum Cost”: Personal Rapid Transit. J. Edward Anderson, Ph.D ., P. E. Chief Technology Officer PRT International, LLC Former Aeronautical Research Scientist, NACA Manager of Space Systems, Honeywell Professor of Mechanical Engineering - PowerPoint PPT Presentation


  • Designing Transit for Maximum Ridership and Minimum Cost: Personal Rapid Transit

    J. Edward Anderson, Ph.D., P. E.Chief Technology OfficerPRT International, LLC

    Former Aeronautical Research Scientist, NACAManager of Space Systems, HoneywellProfessor of Mechanical EngineeringUniversity of Minnesota & Boston Universitywww.prtnz.com, www.prtinternational.com

  • Guideway weight reduction 20:1Small fully automated vehicles!Large manually driven vehicles.

  • Fleet Cost = Cost/Vehicle Capacity People-Carrying Capacity Suppose 15 vehicles each averaging 10 mph provide a given people-carrying capacity.Then 6 vehicles averaging 25 mph provide same capacity.

  • The average speed is highest if there are no intermediate stops, which are not necessary if stops are off-line just like on a freeway.Conclusions:Guideway cost is minimized by minimizing vehicle weight.Vehicle fleet cost is minimized by using off-line stations.This combination makes a major breakthrough!

  • Nonstop tripsHigh average speedMinimum fleet size & costHigh throughput Small vehicles Small, low-cost guideway

    Now interesting things happen: Vehicles run only on demand, not on a schedule.Service is always available, the wait is short to none.Close station spacing does not decrease average speed.Stations can be sized to demand.You ride with chosen companions or alone.All lead to high ridership and low cost.Off-Line Stations are The Key Breakthrough! Off-Line Stations are The Key Breakthrough!

  • Control

    Overcoming Headway Limitations in PRT Systems, www.prtinternational.com

  • How do we keep vehicles from crashing? PRT Control, Longitudinal Control of a Vehicle, Failure Modes and Effects Analysis, www.prtnz.comComputers routinely land airplanes on aircraft carriers. Our computers respond to and correct speed and position two hundred times per second.Todays position and speed instruments are more accurate than we need.Wayside zone controllers monitor vehicle motion. We know how to control any number of vehicles precisely in networks of any size or configuration.

  • System Reliability & Safety Safe Design of PRT System,Failure Modes & Effects Analysis, www.prtnz.com

    Few moving parts in vehicle.No moving track parts in switch.No critical moving parts in motors.Dual motors, sensors, and power supply.Pairs of dual computers. Fault-tolerant hardware and software.Exclusive guideway.Result:Chance of injury is close to zero!

  • Using the New System

  • Buy a Prepaid Card.Find destination number from Information Kiosk.

  • Accessible to wheelchair

  • Ride nonstop to destination!

  • Off-line stations and small vehicles attract many riders!Available anytime of day or night.No need to understand the system.Short walk in a wider service area.Short or zero wait. A seat for everyone.Ride alone or with chosen companions.An enjoyable, nonstop ride.Text message all you want! No transfers.Short, predictable trip time.Competitive fare.

  • Thousands of smooth rides given at 2003 Minnesota State Fair. No Redundancy. No Failures.

  • Cost Comparisons

  • Light rail tranitLight RailA transit mode first introduced in 1886.

  • Chart1



    Cost per Daily Trip


    Cost per Daily Rider

    Hiawatha RailMpls PRT



    Cost per Daily Trip



  • Land Savings

  • Throughput per direction: 6000 cars/hrThroughput per direction: 6000 cars/hr

  • Throughput per direction: 6000 cars/hr300 ft15 ftThroughput per direction: 6000 cars/hr

    300 ft15 ft

  • Enormous Land Savings!Land required only for posts and stations, only 1/5000th or 0.02% of city land.Auto system requires30% of land in residential areas50% to 70% in downtownLand savings + high ridership permits safe, zero-pollution, energy-efficient, environmentally friendly, high-density living to an extent not possible with conventional transportation.

  • A former parking lot!

  • templetons.com/brad/transit-myth.htmlPRT: 1880 BTUs per passenger-mile

  • Significant Recent PRT ActivitySweden to announce first PRT city @ Pod Car Conf.Korean Railroad Research Institute to develop PRT.Minnesota DOT held a workshop on PRT (Aug 2010).Punjab, India announces PRT to be built.Mexico funds PRT Program in Guadalajara.Ithaca, NY initiates PRT Program with NYSDOT.Posco to build PRT system in Suncheon, Korea.San Jose, CA, has PRT program underway.ULTra PRT soon to go in service at Heathrow Airport.United Arab Emirates: MASDAR, Abu Dhabi.

  • Countries involved in development of PRT:England, Sweden, UAE, Korea, Mexico, IndiaUnited States Federal Government ? 0!Cities in USA:San Jose & Ithaca

    Best independent news on PRT is found onhttp://kinetic.seattle.wa.us/prt/www.cprt.org

  • Our StatusSystem under development since 1981.Next steps:$5M will produce all procurement specification$15M more will construct and operate pilot system$5M more will produce plans for early applicationsWe have a complete team of engineers and engineering companies ready to go!

  • For more information www.prtinternational.com.Download the video for a more detailed Systems Engineering presentation.

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