What tunnel runs under the Hudson River and has a ventilation system innovated by Ole Knutsen Singstad?
Holland Tunnel The Holland Tunnel is a highway tunnel under the Hudson River between Manhattan in New York City and Jersey City, New Jersey. Its two tubes carry eastbound and westbound Interstate 78. In New Jersey, it is also designated NJ 139. An integral conduit within the New York Metropolitan Area, it opened in 1927 as the first of two vehicular tunnels under the river, the other being the Lincoln Tunnel. Both are operated by the Port Authority of New York and New Jersey.
List of NJ Transit bus routes (100–199) New Jersey Transit operates interstate bus routes in northern New Jersey, most terminating at the Port Authority Bus Terminal (PABT) in Midtown Manhattan. There are several routes to the George Washington Bridge Bus Terminal and one serves Lower Manhattan via the Holland Tunnel. Some of the routes that use the Lincoln Tunnel to the PABT travel along the marginal road of Route 495 allowing for local connections in Hudson County.