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The purpose of a speed bump is to make the ride over it uncomfortable for the driver, thus encouraging him/her to reduce their speed. The driver of a soft-sprung sedan can experience a more comfortable ride over a speed bump at a lower or higher speed, because of the vehicle's suspension system. On the other hand, a vehicle with tighter suspension (school bus, fire engine, moving van, etc.) must virtually stop before going over a speed bump. Often these devices are suggested to combat speeding or "through" vehicles. If speeding is the problem, studies must be conducted to determine the extent of the problem. Other, more effective steps can be taken to decrease the speeds of vehicles or number of speeders.
Often, there are a few speeders who cause most of the problems. If "through" traffic is the problem, it is often the symptom of a traffic-related problem on a nearby major street. The real problem should be determined, analyzed and corrected. The control of speeding in neighborhoods is a widespread concern which requires the residents' compliance, patience and persistent law enforcement efforts, not speed bumps. Provided by the Traffic Improvement Association 248-334-4971.
Hawk Pedestrian Crosswalk Brochure