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6/23/04 Criteria for placement of "VEHICLE NOISE LAWS ENFORCED" signing in the Mn/DOT Metro Division - Over the past several years there has been increasing efforts by communities to reduce traffic noise levels, particularly at night. One such effort is focused on reducing the "rumbling and popping" noise created by many trucks when decelerating for steep downgrades or when approaching traffic lights and STOP signs. Various signs such as "NO JAKE BRAKING" and "NOISE LAWS ENFORCED" have been used in an attempt to control this noise. This has created several problems: . The sign legends and installations are not uniform and are not understood by many motorists, . Some signs have been installed without approval from MnlDOT. . Many of these signs target truck noise, Noise laws must be uniformly applied and cannot specifically target one type of vehicle. . Jacobs Brake Company is unhappy with the "No Jake Braking" signs that they feel unfairly targets their equipment and has threatened legal action against agencies using this sign. . The State Highway Patrol cnforces noise violations that are due to faulty or illegal equipment that they find as a result of their normal vehicle inspections, They do not feel that they have either the personnel or equipment to directly monitor and enforce noise laws on moving vehicles. e The following criteria are adopted for placement of any new "VEHICLE NOISE LAWS ENFORCED" signs on highways in the Metro Division. This will provide a uniform policy for design and installation of future signs regarding enforcement of vehicle noise laws. . The city must request, in writing, permission for installation of these signs. All requests from neighborhood groups, etc. must be channeled through the city. . The city must agree to enforce the applicable noise laws, . Only standard sign legends, materials and supports will be allowed. . No signs will be allowed on any freeways, . There must be adequate space for the sign as determined by the Metro Traffic Engineer, Traffic Control . One sign per direction, per roadway, per city (e,g. only one sign on eastbound TH 7 through Hopkins), . The city must fabricate and install the signs with their own forces or through contract. A permit from MnlDOT will be needed for placement of these signs on state right of way, . All future maintenance of these signs (knockdowns, replacements, etc.) is the responsibility ofthe city. Please contact Cassandra Isackson, 651-634-2398, with any questions, e