The 706 RTO were built from 1958 to 1972 on the frames of Škoda 706 trucks. The engine was placed in front next to the driver, and the rear axle was propelled by a long driveshaft. On the right side were two doors. The length was 10.7 metres (35 ft) and tare weight a bit under 9 tonnes.
The next bus behind this example is a Karosa ŠM 11 which were built from 1965 to 1981.