In the summer of 2012, NJDOT installed barriers at the Penns Neck Circle to prevent "left-turning" traffic from US 1 in either direction onto CR 571. In conjunction with other blockades of nearby intersections, this 12-week pilot program was meant to improve traffic flows along the congested US 1. Though the project was improving travel times along US 1, motorists wanting to make the previously-allowed left turns were making U-turns and K-turns in the driveways of Penns Neck residences instead of using nearby interchanges to U-turn on US 1 itself. The project ended a month early after residents complaints and local politicians opposition to the project were heard.