Traffic detection cable installation.

摘要

A parallel array of traffic detection cables for speed measurement, the cables embedded in profiles spaded apart to prevent cross cable interference effects while at the same time providing for a second duplicated confirmation measurement e.g. for speed law enforcement purposes by providing those cables in the array, a first to give a start signal for the first measurement, a second (middle) cable to give both a stop signal for the first measurement and a start signal for a second measurement and a third cable to give a stop signal for the second measurement. <IMAGE>