Archive for the ‘General’ Category

Personal Rapid Transit (PRT) and Risk

Saturday, August 14th, 2010

We often come across situations in the U.S. where managers are strongly motivated to avoid all risk (even small risks associated with potentially large benefits) and situations overseas where managers want to evaluate the risks and rewards. We believe the problem in the U.S. lies not so much with the individual managers as with societal expectations, the structure of their job and the way they are rewarded. The manager of a transportation authority must keep those buses and trains running despite increasing fuel costs and decreasing fares and subsidies. He/she is rewarded for implementing a glistening new light rail system and no one cares (or knows) if most of the passengers come from the reduced bus system. Were the light rail system to have a hiccup (delayed opening or budget overrun), the manager’s head may have to roll. No wonder the manager has no time, budget or inclination to look at an innovative system that has few successful operating examples he/she can kick the tires on.

Fortunately for personal rapid transit (PRT or Podcars), there are niche applications where small systems can be effective, such as airports, universities and other campus-like situations. PRT can (and is) make its debut and prove itself in these small applications. Transit managers will then see that it works and be emboldened to apply it in broader situations. Or will they? After a disastrous beginning, the Morgantown PRT system has been running very successfully (substantially beating conventional guideway transit by many measures) for over thirty years (the New York Times characterized it as “A White Elephant Turned Into a Transit Workhorse”) yet few transit managers seem interested in whether its success can be repeated without repeating its teething problems.

Without successful niche applications, PRT in the U.S. would be doomed until overseas applications have been operating successfully for twenty or more years. With successful niche applications, we may be able to stay close on the heels (say ten years behind) of our foreign friends.

How can a society be so risk averse and yet simultaneously accept extreme danger every day in their cars (we kill about as many Americans on the roads each year as were killed in the entire Vietnam War)? If we cannot learn to balance risk and reward, how are we going to ever regain the lead in transportation or any other field where we have lost it?

Car-Free City Enabled by Personal Rapid Transit (PRT)

Wednesday, July 28th, 2010

Imagine a city designed to be free of cars, trucks and buses, yet to include a transportation system that will whisk its residents to any destination quickly and quietly without stopping. Children, the elderly, disabled and poor would have mobility similar to that currently available to the rest of the population.  The buildings could be much closer together, allowing easier walking, and/or they could accommodate more open space. The lack of accidents (personal rapid transit (PRT) is two orders of magnitude safer than current forms of transportation) would bring significant social benefits and greatly reduce the need for emergency services. Crime would be deterred, since the PRT stations and vehicles would be under constant video surveillance.

Some would argue that such a city would still need roads for emergency response, maintenance, refuse removal and large delivery vehicles. However, there are probably other (potentially better) ways of providing these services. Buildings could be sprinkled for fire suppression and equipped to facilitate emergency evacuation. Emergency personnel could utilize the PRT system, which would provide faster access than any present road system, and bring their personal gear with them. Special PRT vehicles could be equipped to accommodate gurneys and function as ambulances, while others could be equipped to support fire fighting. PRT freight vehicles could remove trash and deliver goods. Low-impact vehicles could deliver large goods by slowly driving down the pedestrian walkways, linking the buildings to each other and the PRT system. Some of the infrastructure savings could be used to fund helicopter services for extreme emergencies or exceptionally difficult movement of large items. All of these concepts need to be refined and incorporated in the new city’s building and planning codes, but none seem insurmountable.

Such a city couldbe made more sustainable by incorporating numerous additional low energy/emissions/waste technologies and yet be built for less than the cost to build a conventional city, since it would require less transportation infrastructure. Fewer PRT vehicles (and vehicle storage spaces) would be needed than the cars they replace, because each vehicle would make 50 to 100 trips per day. Even though the city cost less to build, its value would likely be higher than a conventional city. Studies have shown that the value of housing served by a good transit system is increased 6% to 45%, and commercial land values have been shown to increase 24% to 103%.

Residents would be able to purchase homes at a reduced cost and to reduce their automobile ownership. They would leave any cars they did own in parking facilities at the perimeter of the new city. Recreational vehicles would also be stored at the perimeter. Those with jobs in the new city would seldom use automobiles and thus lead much safer lives with reduced waste of time. Opportunities to use technology for improving many aspects of life, beyond just transportation, could help keep the new city almost free of crime and allow the residents to have a truly wonderful standard of living. It is finally time to take our cities back from the automobile and let them serve human needs once more.

Hello personal rapid transit world!

Monday, April 27th, 2009

This is my first post and I have restricted it to simple housekeeping items. More substantive posts will follow soon. In the meantime, welcome to a whole new world of inter-connectivity!

Keep checking back for personal rapid transit (PRT) related posts soon.

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Peter Muller