The RUF system is a completely new kind of transportation system. It is a dual-mode system where the vehicles are small electric cars (rufs) or larger Automatic People Mover units (maxi-rufs). The vehicles can go directly from road to a triangular monorail at 30 km/h. The ruf is "riding" on top of the triangular monorail. The ruf has an A-shaped slot along the underside of the vehicle. It is equipped with both normal road wheels and special simple rail wheels. The rufs can be closely coupled on the monorail.