Gary, Seeing the train crew relay those hand signals must have been real interesting. Nowadays on the SVRy we all carry radios, but the rule is to use them for emergencies only. We are required to carry our Rules and Safety books on us at all time. The Rules and Regs book is a bright orange, and the Safety book is a bright green. Conductors and Brakemen hold up the orange book when giving signals in the daytime. At night an amber (yellow to the purist) kerosene lantern is used by the crew. An amber light is very discernable amongs all the white lights used on the train during night runs.