VEVOR Portable Speed Bump Speed Hump 9.8 Ft Rubber Speed Bumps for Driveway

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Q:

Will these stay put on unsealed roads? fresh graded and compacted for an event. want to slow down vehicles approaching the gate house at peak entry times.

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A:

As long as the speed is not fast, it can remain the same. If the vehicle speed is fast, it will make the deceleration belt offset.

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