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Speed Humps

Speed Humps

Speed Humps

(OP)
I was curious if there are standard design criteria for speed humps?  If so, where can they be found?  I ask the question because they recently installed speed humps in a neighborhood adjacent to ours, and I am convinced that they were constructed with too much of a peak.  They are clearly more 'severe' than other traffic calming areas around town.  I would estimate (without measuring) that some of them are 5 to 6 inches tall, which seems excessive.  I literally cannot go faster than about 10 mph over some of them.

RE: Speed Humps

The FHWA document Traffic Calming: State of the Practice, FHWA-RD-99-135, gives standards for traffic calming devices such as speed humps. I perused it briefly before writing my response, and it looks like speed humps shouldn’t get any taller than 4”. Hope this helps.

Rob

RE: Speed Humps

To design the number of lanes at a toll plaza. what would be the criteria since HCM is silent about that. how to decide about the number of lanes for 4 lane dual carraigeway

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