Passing loop
Videos
A passing loop or passing siding is a place on a single line railway or tramway, often located at or near a station, where trains or trams travelling in opposite directions can pass each other. Trains
An example of a passing loop with two platforms
Two TGVs crossing each other at a station in France.
Trains in a passing loop at Penryn railway station in the United Kingdom
Passing sidings in North America can be very long. This one in Bolton, Ontario – the track on the right – measures some 3.5 km (2.2 mi).
Centralized traffic control
Videos
Centralized traffic control is a form of railway signalling that originated in North America. CTC consolidates train routing decisions that were previously carried out by local signal operators or the
Active Union Switch and Signal Co relay based CTC machine at THORN tower in Thorndale, Pennsylvania
CTC automatic block signals along the Union Pacific Railroad Yuma Subdivision, Coachella, California
Computer-based controls for a modern electronic interlocking