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43 <br /> <br />Activated Blank-Out Turn Prohibition Signs (MUTCD R3-1 and R3-2) <br />These LED-illuminated signs are used to prohibit left or right turns during certain times of <br />day. <br /> <br />Guidance <br />• Turn Prohibition signs should be placed where they will be most easily seen by road <br />users who might be intending to turn. If No Right Turn (R3-1) signs are used, at least <br />one should be placed either over the roadway or at a right corner of the intersection. <br />If No Left Turn (R3-2) signs (see Figure 2B-3) are used, at least one should be placed <br />either over the roadway, at the far left corner of the intersection, on a median, or in <br />conjunction with the STOP sign or YIELD sign located on the near right corner. <br />• The City of Pleasanton uses the No Right Turn (R3-1) at all dual right and right/ <br />through-right intersections when a pedestrian activation is in the walk phase. <br />Considerations <br />• At railroad crossings, side-mounted placement of signs may be preferable to <br />overhead. <br />• For dual right-turn movements, placement may be difficult because both the inside <br />and outside right-turn drivers need an unmistakable indication that the restriction <br />applies to them. <br />