commutation crossing the Hudson River. Over 100 bus carriers utilize the Exclusive Bus Lane. New Jersey Transit operates numerous interstate bus routes through the Lincoln Tunnel, as do numerous regional and long-distance companies. Walt Whitman Bridge, Ben Franklin Bridge and Commodore Barry Bridge over the Delaware River between New Jersey and Pennsylvania use moveable medians, to create zipper lanes. New York Delancey Street in Manhattan has two lanes on the eastbound side adjacent to the median used for westbound traffic in the morning rush hour between the Williamsburg Bridge and Allen Street. All traffic in these lanes must continue to and then turn left onto Allen, during these times left turns are prohibited from the regular westbound roadway onto Allen Street. Manhattan Bridge in New York City has three lanes on the lower level, which can have all lanes used in one direction or reversible with two lanes one way and the other for the opposite direction. Upper level of the Queensboro Bridge in New York City has four lanes and can have all flowing outbound (PM peak), or two lanes each direction in normal configuration. Mid-Hudson Bridge in Poughkeepsie, New York, has a reversible center lane used during rush hour. North Carolina East 7th Street in Charlotte U.S. Route 29 in Charlotte This road is the access road to Charlotte Motor Speedway from the city, and links to Interstate 485. It is used for any events at the speedway. Ohio Butler Street in Sandusky, used to route traffic between U.S. Route 250 and Cleveland Road, features a reversible center lane to facilitate influxes of traffic going to and from Cedar Point. Pennsylvania Liberty Bridge near the southern terminus of I-579 in Pittsburgh has 4 lanes, all of which are potentially reversible, and 2 of which are reversed based on rush-hour times. West End Bridge in Pittsburgh has 4 lanes, which are all potentially reversible. West General Robinson Street near Heinz Field in Pittsburgh has 4 lanes, and 2 are reversible. South Carolina The Silas N. Pearman Bridge, demolished in 2005, originally contained a third reversible lane, leftmost when heading north on US 17. This was converted to a fixed truck lane for southbound traffic shortly after its construction in the 1960s, as an inspection of its companion bridge, the John P. Grace Memorial Bridge, revealed it was no longer strong enough to carry truck traffic. Both bridges would eventually