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3) Figure 23 shows various turning radius <br />templates for intersections used by transit <br />vehicles. These templates shall be used to guide <br />curb radius decisions within these intersections. <br />4) The 25' turning radius standard is designed for <br />_~ making a safe right turn at ten miles per hour or <br />less. Higher speed turns would require a larger <br />turning radius. The design radius may also be <br />inadequate due to insufficient lane width, the type <br />of movements by other vehicles or pedestrians, or <br />the presence of obstructions, such as signs. To be <br />certain of meeting bus turning requirements, it is <br />useful to test a simulated version of a proposed <br />street or driveway design. The City of Eugene shall <br />coordinate with LTD on intersection design to <br />ensure that adequate turning radii are provided to <br />accommodate bus movements. <br />Figure 25 <br />• Designers should plan for an effective ^ <br />radius of 28' (right rear wheel) <br />• Transit vehicles are assumed to be 41' by 8'6" <br />• Assumes no encroachment into opposite lanes <br />• Assumes parking is prohibited within 20' of <br />end of curb return <br />• These are examples, appropriate curb radii must <br />be determined on a case by case basis by Eugene <br />Public Works Transportation and Lane Transit District <br />Case 1 <br />• Turn into one lane R=25' <br />• No parking or bicycle lanes / <br />Case 3 <br />• Turning from one 10 foot lane to <br />another 10 foot lane <br />• No parking or bicycle lanes <br />=T <br />~ir <br />+ ~ f <br />R=30' <br />R= <br />15' <br />to 12' 5' r <br />Case 4 <br />• Turn into one lane <br />• Bicycle and parking lanes <br />before and afterturn <br />87 <br />