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Guidepost <br /> These traffic calming measures should adhere to the following criteria to be considered for installation. <br /> 1. Installation must not result in traffic diversion to other neighboring streets <br /> 2. A public involvement activity should be held to survey support with at least 10 impacted residents <br /> participating and a majority being in favor of the traffic calming measure <br /> 3. Devices shall be installed only where a minimum safe stopping distance can be provided <br /> 4. Emergency response departments must approve the plan to ensure that emergency response time or access <br /> is not negatively affected. <br /> Table 5 —Traffic Calming&Safety Improvement Thresholds <br /> Concern Threshold <br /> Speeding 15%of vehicles are travelling 15 MPH over the speed limit or 30%of vehicles are <br /> travelling 10 MPH over the speed limit <br /> Is the location within 0.5 miles of a school, are there more than 5 pedestrians <br /> Pedestrian Safety performing unsafe actions (Crossing where there is no crossing,entering the roadway, <br /> etc.) within the span of an hour, has there been a severe pedestrian crash,or has there <br /> been more than 1 pedestrian crash in a one-year period <br /> Intersection Has there been more than 1 severe crash related to intersection geometry or <br /> Safety/Traffic Signals intersection controls, intersection crash rate can be considered but no hard threshold <br /> can be recommended due to a high amount of variability between locations. * <br /> Ignoring Traffic Controls More than 1 vehicle ignoring stop/yield signs in a 1-hour period or more than 5 <br /> vehicles ignoring stop/yield signs in a 24-hour period <br /> Record of damage to more than 1 vehicle due to the condition of the roadway within a <br /> Roadway Conditions 1-month period,more than 1 severe crash due to the roadway conditions in a 1-year <br /> period,or 15%of vehicles travelling performed an unsafe maneuver due to roadway <br /> conditions <br /> *Illinois does not currently document what the statewide average intersection crash rate is. Currently the City is using <br /> a threshold of 1.5 crashes per million entering vehicles. The project team was able to find some states such as <br /> Wisconsin,Massachusetts,and New York that do track this but the data is outdated and highly variable by intersection <br /> control, roadway type, state, and even location within the state. Therefore, it is not a recommended primary way to <br /> identify problem areas. <br /> Kapur Page 44 of 81 <br /> all in <br />