dead man’s switch n.— «On the subway and elevated lines it is found in the nearest doorman and a “dead man’s switch.”» —“Precautions of Railroads to Prevent Death at the Throttle” in New York Washington...
dead man’s handle n.— «In the motorman’s cab there are two levers, a braking lever operated by the right hand and the controller lever, equivalent to an accelerator, which is operated by the left hand. The controller is also called the...