<P> In the United States, the 1999 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Development of Bicycle Facilities recommends minimum standards for road shoulders receiving rumble strips to accommodate all users of the roadway and make best use of funds . </P> <P> In New Jersey, a centerline rumble strip was placed in the vicinity of the D&R Canal without a permit from the Delaware & Raritan Canal Commission in violation of state law . The excessive noise through a residential area and the fact that the work was not appropriately permitted was complained about to the New Jersey Department of Transportation by a local homeowner, with no corrective action taken by the New Jersey Department of Transportation . </P> <P> Excessive noise is noted in a Canadian study as a reason not to install rumble strips, and it is advised not to install rumble strips within 200 metres (660 ft) of a residential area . The report states that "a balance is required between installing effective rumble strips and minimizing noise impacts . Studies show that rumble strips terminated approximately 200 m (660 ft) away from residential or urban areas produce tolerable noise impacts on residences . At an offset of 500 m (1,600 ft), the noise from rumble strips is negligible ." In an Open Public Records Act Request, this study was the only document provided by the New Jersey Department of Transportation when requested to provide policy documents and safety studies relating to its implementation of centerline rumble strips . </P> <P> Numerous US and Canadian cycling associations have complained about encroachment of rumble strips . One club even launched a lawsuit to have them paved over, although the suit was dismissed for lack of standing . </P>

Need to warn a vehicle that is straying into your lane