HIGHWAY EMERGENCY COMMUNICATIONS-WARNING SYSTEM AND UNITS

摘要

A highway warning system is comprised of a plurality of standards erected at regularly-spaced intervals along the road side and interconnected by conventional telephonic system to a central dispatcher station. The standards are provided with communication elements and a light which is under control of the central station such that the standard at the closest point to a trouble site may be illuminated and as well standards ahead of the trouble point may be illuminated to warn motorists of potential danger ahead.