A cross between an invalid carriage and a rail trolley with top speed of 30 m.
A cross between an invalid carriage and a rail trolley with top speed of 30 m.p.h. was tried out, Aug 25, by New York Port Authority police in Lincoln Tunnel, connecting Manhattan Island with New Jersey.
At present, Port Authority police have to walk along tunnel cat-walks every time there is a jam or breakdown in one of New Yorks tunnels - slow and inefficient. If the new trolleys are widely adopted, life will become much easier for them.