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The McCrary Personal Transport System (PTS) is a simple, inexpensive step beyond present transportation methods. It uses small private vehicles similar to current hybrid automobiles for both street travel and rapid intermediate-distance commuting. The PTS elevated roadway is a lightweight, mass produced steel structure that utilizes existing rights of way with minimal interference to existing infrastructure. On the roadway, PTS vehicles are integrated into an automated, constant velocity traffic system, but are operated as standard automobiles on city streets, roads, and highways. |
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The roadway is erected over rights of way of existing freeways, roads and streets using standardized prefabricated 60 foot long roadway sections supported on preinstalled standard columns. A simple mechanized erection process (setting each new section from previously laid sections from above) requires a fraction of the time and cost of normal freeway construction and does not disrupt traffic in the road below.
One lane of the P.T.S. road way traffic flow is equal to 10 lanes of typical freeway traffic flow.
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The PTS vehicles are conventional automobiles that are able to meet the system specifications and are equipped with an onboard automated sensing and control system. Conventional controls provide for street driving. The onboard control system, directed by a master computer, aids in controlling the vehicle while on the PTS roadway. The onboard sensing system is also able to monitor all of the primary mechanical, electrical and other indicators of potential problems; then, if necessary, communicate to the master computer the potential for failure. The vehicle would then be denied entry or removed from the roadway.
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Cross section of Elevated Roadway
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Operating at a single constant speed of 100 feet/second (68 mph) and bumperto-bumper vehicle spacing, a single lane on the PTS can move as many as 20,000 vehicles per hour. A single lane of a conventional freeway is stated by traffic experts to accommodate a maximum of 2,000 vehicles per hour. |
Hybrid Toyota Prius
Hybrid Honda Civic
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Typical vehicles that could be modified to meet the design specification of the Personal Transportation System. |
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