About Personal Rapid Transit
PRT (Personal Rapid Transit) is the most common name for systems where small vehicles transport people directly to their destinations on exclusive tracks. As the tracks are separated from other traffic the vehicles can be fully automatic. To minimize the travel time all stations are on side tracks so that your vehicle can pass by if other vehicles stop to pick up or drop of their passengers.
In most locations in our cities finding available land for exclusive tracks at ground level is very hard. Instead most PRT systems are designed with guideways which are special beams which carry the vehicles above street level. The guideways are suspended from posts at regular intervals. As the vehicles are small and light (in contrast with trams) the guideways can be made very slim and inexpensive.
The stations are small and closely spaced. Normally there is a station within 300 meters (1000 ft) from the home and work place. This is similar to the spacing of bus stops. The big advantage is that once you reach your closest stop there is an exclusive vehicle waiting for you which will take you immediately to any other stop within the PRT network.
So instead of having a system of fixed lines with time tables and ask of passengers to wait for vehicles and change lines to get to their destination the PRT vehicles will select the fastest route from the origin to the destination. This results in a mean speed similar to a private car travelling in an uncongested road network.