Assertion: intersection's opening | /r/CapableOf | facilitate u-turn
Facets:
Source sentences:
text: According to NCHRP 420, the collision rate along road sections having directional median openings (facilitating U-turn and left turns) versus road sections having full median openings (facilitating all movements) was 49 to 52 percent less for signalized corridors having more than one traffic signal per mile.(85)