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From school zones to housing communities and shopping parking lots, speed bumps can seem inescapable. These "traffic calming" measures are intended to slow traffic where speeding is a problem or safety hazard, but they can also cause damage to vehicles that are driving over them at a normal road speed. This jostling can result in squeaks and rattles, alignment issues, or even tire or suspension damage.
Often placed on residential roads, speed bumps are rounded and can be made in a variety of shapes to suit the surrounding terrain. They can be as short as a few inches, or several feet in length. They are generally not placed on major roads, bus routes, or primary emergency response routes, since they can slow the responses of fire trucks and ambulances by up to 10 seconds per hump when carrying patients.
While they may be effective in some areas, the use of speed bumps is controversial and raises concerns for both drivers and residents. They are expensive to install, require ongoing maintenance, and can cause damage to vehicles moving at a regular road speed. In addition, they can create delays for emergency vehicles and increase noise levels.
There are numerous alternatives to speed bumps, including lowered speed limits, improved signage, and increased law enforcement presence. The use of these alternative methods should be based on research and data to ensure that they are truly necessary. If they are used to control speeding in a neighborhood, it should be determined if there is a real problem that can't be solved through other means.
Many homeowners are unhappy with speed bumps in their neighborhoods, and some will even opt to move out of a community that has them. They are unsightly, can be difficult to navigate for wheelchairs or strollers, and they may be a tripping hazard for older residents. Speed bumps can reduce property values, and prospective homebuyers may avoid homes in communities with them.
