alcock@mother.DEC (Bruce G. Alcock) (01/27/86)
First, to answer the question about the East River Tunnel signals, the lower red signal simply indicates that the signaling system is working. So green over red means proceed, red over red means stop - has nothing to do with the aspect of the next signal. Coming into Penn Station from Long Island city, the trains line up and follow one another in - there is a single one light under the round position signals - when this light is lit, that indicates stop and proceed (at 5MPH). The cab signals (all LIRR trains have speed control) are speed indicators. At a stop and proceeed inidcation, the cab signal shows 0 mph, the motorman must acknowledge the speed indicator since he has exceeded the cab signal speed. All equipment (diesels and MU cars must have speed control on the LIRR). Running left hand - C & NW, because of they were originally financed by English investors in the 19th century. Also the Kansas City Southern, call the Haywire, because it runs haywire - left hand traffic. Finally, speed calculations - just time the train between mileposts. I won't insult a group of computer people by supplying a formula. bruce alcock