Title

A combined Semaphore and Light Railway Signal

Caption

Illustration depicting a combined Semaphore and Light Railway Signal. When the arm is horizontal the red light shows and 'Danger' is signalled. When the arm is hanging at 45 degrees the green light shows and 'Proceed' is signalled. The right hand view shows the signal at rest. Dated 19th century

Date

19th century

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP23A18_316

License type

Rights managed

Available size

60,0Mb (3,2Mb) / 19,1in x 12,2in / 5737 x 3655 (300dpi)

Keywords

Illustration Illustrated Semaphore Signal Signal Light Railway Signal Light Signal Light Red Green Railroad Arm Track Railroad Track Track Train Track Indicator Indicator Disk Disk Quadrant Safety Safe Safety Position 19th Century Illustration Illustrated Semaphore Signal Signal Light Railw