Road structure – process – or apparatus – Traffic director – Attenuated lane marker type
Patent
1990-12-10
1992-03-17
Britts, Ramon S.
Road structure, process, or apparatus
Traffic director
Attenuated lane marker type
340933, 200 86A, 404 71, 404 6, E01F 906, E01C 700, G08G 101, H01H 314
Patent
active
050963295
ABSTRACT:
Disclosed is an improved system for quick detection of driver impairment as evidenced by the driver's inability to keep a vehicle on an assigned course, utilizes parallel strips defining a relatively narrow lane through which the driver is to operate the vehicle. The strips and their associated equipment, are readily portable, and are thus adapted to be set up by police officers at any location desired, in a minimum amount of time, thereby permitting spot checks with little or no advance warning to motorists approaching the check point. The strips are hollow, and contain pressure chambers, the volume of which is reduced when a vehicle tire crosses or rides along on top of one of the strips. Reduction of the pressure chamber volume is adapted to carry air pressure through tubes to locations near to or remote from the hollow strips to actuate electrical switches located at predetermined intervals along and out from the traffic lane defined by the hollow strips. The switches in turn close circuits, to turn on signal lamps or to actuate other apparatus.
REFERENCES:
patent: 1836655 (1927-12-01), Dunford
patent: 1999661 (1929-12-01), Nagashev
patent: 2403277 (1941-11-01), Hall
patent: 4250434 (1981-02-01), Valansot
patent: 4716413 (1987-12-01), Haile
patent: 4839480 (1989-06-01), Bickley
Britts Ramon S.
Connolly Nancy
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