Before revision: Hairpin turn in Oregon, US A hairpin, after which the feature is named A hairpin turn (also hairpin bend or hairpin corner) is a sharp 180° change in direction .
After revision: Hairpin turn in Oregon, US A hairpin, after which the feature is named A hairpin turn (also hairpin bend or hairpin corner) is a bend in a road with a very acute inner angle, making it necessary for an oncoming vehicle to turn about 180° to continue on the road .