Agenda - Council - 09/09/1996 - Laserfiche WebLink

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anywhere from a s~gnt rec~ucnon m nt2~ level t6 an increase in noise level. The noise level at the bumps/humps is dependent upon. the speed at which the vehicles traverse them. Because of their effect in slowing traffic, bumps/humps tend to have a negative im- pact on air quality and energy consumption. Tra£fic Sa£ety. Traffic safety has not been found to be compromised with speed bumps and speed humps as long as proper design and installation procedures are followed when they are installed. Traffic safety benefits can be gained ff speeding is involved. Community Reaction. The initial reaction of the people living in the area of the instaliation is generally positive, while negative reaction can occ~ from those people who ?roduce through traffic trips in the area. The reaction of the people Living in the area can change over time. Legal As defined by the Manual on Uniform Traffic Control Devices, 'speed bumps and speed humps are not traffic control devices. They are geometric design features and should be designed and installed accordingly us'rog accepted judgement. engineering principles and Cost The cost of constructing a speed hump has been found to be in the range of $1,000 - '$2,000. Speed bumps cost approximately $500- $1,000. Neighborhood Traffic Control January I994 The impact on mai2tenance activities such as snowplowing and street sweeping is mini- mai. Speed bumps/humps can significantly pact large trucks, transit and school buses. If used on regular routes of these vehicle types, attention should be given to informing these drivers of proper operation necessary to min- imize impacts. Case Study A series of three speed humps were installed on Homestead Drive in Appleton, Wisconsin. From 'a technical standpoint, the humps were effective in reducing th percentile speed from 34 mph to 26 mph. One year and five months after the installation of the speed humps, they were removed. The removal was prompted byfa. survey of the neighborhood residents who directly abutted the street that the speed humps were on. This' experience allowed for two winters of main- tenance and found that their presence did not create any unusual street maintenance problems. It is interesting to note that the vehicle speeds found to exist pri6r to the installation of the speed humps returned after the speed humps were removed. Refemn~ Institute of Transportation Engineer's Residential Street DeMgn and Traffic Contra! A Proposed Recommended Practice of the Ir~fibate of Tr',msport~- tion Engineers by the Tecknlcal Cotmdl Speed HumF~ Task Force I Guldelin~ for ~e Design and Application of Speed Hump~ ! !