The Port Authority allows for limited layovers of buses, thus requiring companies to make other arrangements during off-peak hours and between trips. Many park on local streets or parking lots during the day, while others make a round-trip without passengers through the Lincoln Tunnel to use layover facilities in New Jersey. Bus layover parking on city streets is regulated by the NYDOT, which assigns locations throughout the city. In the vicinity of the PABT, these are concentrated on the side streets between Ninth and Twelfth Avenues from 30th Street to 60th Street.