When I was in highschool in New Jersey in the 1970s, right-on-red was legalized; a classmate realized that this meant that under light traffic conditions, if he

When I was in highschool in New Jersey in the 1970s, right-on-red was legalized; a classmate realized that this meant that under light traffic conditions, if he faced a red light while driving down the highway, he could turn off onto the jughandle, then make a right back onto the highway, regardless of whether the cross-traffic light was still green or had turned red. More recently, Google maps at one point had a routing bug that caused it to propose a 360-degree double U-turn at every intersection while traveling along US 1, which in practice would result in the same maneuver.