Signs shall include a tactile arrow aligned parallel to the crosswalk direction. The arrow shall be raised 1/32 inch
(0.8 mm) minimum and shall be 1-1/2 inches
(38 mm) minimum in length. The arrowhead shall be open at 45 degrees
to the shaft and shall be 33 percent of the length of the shaft. Stroke width shall be 10 percent minimum and 15 percent maximum of arrow length. The arrow shall contrast with the background