Why doesn’t the MUTCD contain standards for the design and spacing of speed humps and bumps?
Speed bumps and humps are considered “physical features” of a roadway rather than traffic control devices (TCDs), so the MUTCD does not address the height, width, length, or spacing of the actual humps and bumps. The pavement markings and signs used to warn road users of the physical features of the road are TCDs and are therefore covered by the MUTCD. The Institute of Transportation Engineers (www.ite.org) publishes technical guidance on criteria, dimensions, spacing, etc. of speed humps that many cities and counties use in developing their own policies for these features.
