The next big thing in transportation may be small. Its generic name is “personal rapid transit (PRT).” PRT is currently stuck in the starting blocks, waiting to prove its mettle as a major part of a regional transit strategy. Its prototype is perched on a specially engineered track in a warehouse in Fridley, Minnesota.

Nearby one finds the brooding eminence of its inventor, Dr. Edward Anderson. Anderson conceived the technology 20 years ago, tweaking and perfecting it ever since. Small vehicles, slightly smaller than Volkswagen’s Beetles, run on elevated tracks 16 feet above the street level. Anderson, now 75, concocted the complex of algorithms to control the car’s movements, creating software that advocates say makes Anderson the Bill Gates of transportation. But, as yet, there’s no Microsoft-like company. Anderson and advocates have not succeeded in rounding up enough funding to field a scalable demonstration, much less a first real market application. This leaves the idea in the Rodney Dangerfield position.
But respect may be coming — for two reasons.
First, nearly every growing American region is waking up to the risk of sticking with an auto-only transportation approach. The explosion of interest in light rail and commuter rail over the last decade suggests that public officials in many metro regions see the need to provide some choices, particularly in the midst of a real estate boomlet back to urban centers.
But all these rail strategies have the same problem as broadband in the telecom world — the last-mile gap. Rail, like signal switching, also terminates in stations. During a normal workday, people do a lot of moving around in activity-rich zones such as downtowns or university areas. When the zone is too big or too hostile for walking, people naturally opt for their cars. Except for places like New York and Boston (and maybe Miami), large American urban centers notably lack convenient ways to get around without using a car. This is the natural PRT target — the sweet spot — serving activity-rich zones, to which most people still drive, while a steady and slightly growing minority arrive by rail or bus.

Second, PRT’s characteristics meet almost exactly every standard reason people throw up for using their cars rather than transit. Its small vehicles simulate the privacy and flexibility people associate with cars. The vehicle goes only to your destination, not stopping at a dozen others on the way. The system is always there when you want it; so waiting and schedules are not factors.
So why is this technology not finding its natural market?
The big problem is this: while PRT boasts more than competitive capital and operating cost projections, the public sector has grown so risk-averse (Robert Moses — where are you?) that no public official will take the risk that something will go wrong. So this technology sits on the sidelines, longing for angel funding or some private developer eager to incorporate it in a major real estate scheme.
It helps to remember that the facsimile process emerged in the 1940s. The military and research scientists used it, but nearly no one else did until the late 1970s when fax machines became a regular market phenomenon. Cell phones share a similar history. The first cellular call was made 30 years ago. But cell phones were mostly novelties until the late 1980s. Today they’re the extended earrings attached to two thirds of the American population.
PRT looks like it’s on the same slow track. Today Anderson’s invention — now dubbed Skyweb Express — looks likes it has a clear technology lead. The small company organized around the invention — Taxi 2000 — shows off a shiny red prototype in that Fridley warehouse for a new round of visitors every week. The same computer software capable of guiding hundreds of vehicles to destinations moves the prototype car around a simple test track. What’s needed is venture capital and a management team experienced in the arts of bringing radically new technology to market.
Once PRT shows its stuff — any place — it’s easy to imagine its rapid spread. The Federal Transit Administration would smile on its projects. State DOTs would include it in their 20-year plans. Mayors would talk about it as though they’d invented it.
Meantime, Ed Anderson still feels like Rodney Dangerfield.

