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The figure above shows:
This is the preferred cub ramp configuration when radius greater or equal than 5’. Applications for this detail include urban and suburban intersections with sharp curb returns and wide sidewalks that allow a pair of perpendicular ramps to be built according to standard (MD 655.11) while maintaining minimum sidewalk clearances and landing areas. Pedestrians using the ramp will enter the roadway perpendicular to the curb, and therefore this detail is optimal for locations where the crosswalk is placed at a right angle to traffic. The location of the ramp, as shown in this detail, is based on developing flares from the tangent point. Use of this detail is appropriate at non-signalized intersections. Since the setback of the ramp from the crossing roadway allows a stop bar be installed relatively close to the intersection, thereby enhancing sight distance for stopped traffic.
Note:
- Detectable warning surface shall be used per Standard MD. 655.40
- Sidewalk width shall be 11 feet min. for 6 inches curb and 13 feet min. for 8 inches curb.
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