Tedi_lcr

LCR Langage de Commande Routier in english means Road Command Language and is a frame generator & transmitter that is used for dynamic road equipment and their computer systems.

It is used in the regulation and monitoring of traffic and its environment:

PMV
video cameras
tunnel management
emergency telephone and radio network (RAU and BAU)
video switching matrices
weather stations
retention basins
electrical distribution
etc.

It is basically a Bell202 transmitter with special string formatting.

(TEDI is from the original wiki, need to clarify if the term is important for this page)