Pulse code cab signaling

SEPTA cab signal display for the 4-aspect PRR system using position light aspects

Pulse code CSS antenna mounted under the pilot of an SRNJ diesel locomotive

US&S electro-mechanical pulse code generator unit generating 180ppm for a cab signal system

Modern Amtrak cab signal display using colorized position light signals. This unit is compatible with the ACSES overlay system and is currently displaying a RESTRICTING aspect with the speed limit of 20mph displayed below.

Pulse code cab signaling is a form of cab signaling technology developed in the United States by the Union Switch and Signal corporation for the Pennsylvania Railroad in the 1920s. The 4-aspect system widely adopted by the PRR and its successor railroads has become the dominant railroad cab signaling system in North America with versions of the technology also being adopted in Europe and rapid transit systems. In its home territory on former PRR successor Conrail owned lines and on railroads operating under the NORAC Rulebook it is known simply as Cab Signaling System or CSS.

单词	Automatic Speed Control
释义	Automatic Speed Control 英语百科 Pulse code cab signaling Pulse code cab signaling is a form of cab signaling technology developed in the United States by the Union Switch and Signal corporation for the Pennsylvania Railroad in the 1920s. The 4-aspect system widely adopted by the PRR and its successor railroads has become the dominant railroad cab signaling system in North America with versions of the technology also being adopted in Europe and rapid transit systems. In its home territory on former PRR successor Conrail owned lines and on railroads operating under the NORAC Rulebook it is known simply as Cab Signaling System or CSS.
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Automatic Speed Control

Pulse code cab signaling