The mayor of a California city said an error by contractors was responsible for the zigzagging lane lanes on a city road that left some residents scratching their heads. SNIP Velazquez said the lines were supposed to be slightly curved, but the instructions were apparently misinterpreted by the contractors who painted the lines. "Basically, it just comes down to the contractor. Somebody didn't read the plans correctly," Velazquez said. "It was not designed to look very odd."