Snow plow compatible speed bumps

Details Snow plow compatible speed bumps Snow plow compatible speed bumps

1994-02-18

1995-05-16

Buiz, Michael Powell

Road structure, process, or apparatus

Traffic director

Vibration inducing member

E01F 9047

Patent

active

054154936

ABSTRACT:
A speed bump for use in connection with roadways located in climates where snow plow is used to clear the roadways. The speed bump comprises two raised masses that extend across the traffic lanes of a roadway, each having a crown of fixed width running substantially the length of each bump, a gap of fixed width lying in parallel and in between the two raised masses, the leading edge of the first raised mass is tapered to allow a snow plow to smoothly lift over the mass, the trailing edge of the first raised mass is relatively steep to provide the desired speed control, the leading edge of the second raised mass is relatively steep, the trailing edge of the second raised mass is tapered, the gap between the two raised masses provides the desired speed control by allowing the tire to gradually rise up the tapered leading edge of the first raised mass before abruptly dropping down, then abruptly rising back up the second raised mass leading edge and then gently rolling away down the tapered trailing edge of the second raised mass, the abrupt drop and bump back up serves to control vehicular speed.

REFERENCES:
patent: 3975108 (1976-08-01), Suhr et al.
patent: 4687370 (1987-08-01), Knowles
patent: 4697294 (1987-10-01), Schafer
patent: 5106226 (1992-04-01), Fanslow et al.
patent: 5295759 (1994-03-01), Flanders et al.

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