R/T

Meanings

1. Radiotelephone; radiotelegraph.

1. Initialism of road and track; used to indicate a high performance edition of a vehicle or part, capable of use for everyday driving as well as amateur racing.
2. Initialism of road and terrain; used to indicate a ruggedized version of a part, capable of on-road performance and off-road track/terrain performance.
3. Initialism of rugged-terrain; a type of all-terrain tire (A/T) with better off-road and on-road performance (similar to M/T and H/T respectively).