Traffic sign and improved system for recording vehicle speed

Details Traffic sign and improved system for recording vehicle speed Traffic sign and improved system for recording vehicle speed

1975-05-01

1979-10-30

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

235 92TC, 340 38R, 346 33D, 346107VP, G08G 110, G08G 101, G01D 942

Patent

active

041730100

ABSTRACT:
Sensors are positioned adjacent a roadway. Such sensors conveniently comprise pressure switches connected to two speed hoses to be run over as in a traffic counter. Alternately, photo-optical, acoustical, or magnetic field sensors can be used. The sensors are spaced a predetermined distance apart in the direction of travel, and provide information to a logic system to measure the speed of vehicles traveling along the roadway. The logic system is connected to a simple readout sign displayed for observation by drivers of vehicles along such roadway, which sign indicates whether a vehicle is traveling at a proper rate, or too fast or too slow, or too close to a preceding vehicle. A modified motion picture camera is provided adjacent the roadway to film a vehicle that is moving too rapidly, and a modified film editing device is provided for counting the frames exposed, and thereby to determine the speed of such vehicle. This latter device preferably reads out direct in miles per hour.

REFERENCES:
patent: 2250442 (1941-07-01), Abell
patent: 2769165 (1956-10-01), Bower
patent: 2813468 (1957-11-01), Jones
patent: 3165373 (1965-01-01), Scott
patent: 3181150 (1965-04-01), Ruppersberg et al.
patent: 3544958 (1970-12-01), Carey et al.
patent: 3788201 (1974-01-01), Abell
patent: 3827070 (1974-07-01), Hoerenz
patent: 3840848 (1974-10-01), Marshall
Lamm, Popular Mechanics, Dec. 1969, pp. 73-76 and 194.

Affiliated with

Also associated with

Rating

Traffic sign and improved system for recording vehicle speed does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Traffic sign and improved system for recording vehicle speed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Traffic sign and improved system for recording vehicle speed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-21243