MODRATEC Useful Data (otherwise known as MUD) is a series of pages containing helpful information particularly relevant to rail modellers. This page tabulates the colours used for levers in mechanical lever frames as specified in the current British Rail Safety & Standards Board - Railway Group Standards guidance notes.

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Standard Lever Colours

The following table is based on information found in the Railway Group Guidance Notes GK/GN0525 dated October 2003 and published by the Rail Safety and Standards Board - Railway Group Standards.

Lever Colour(s)	Lever Function(s)
Yellow	Distant signal Lever collars (for electrical isolations)
Red	Stop signal (main or miniature) Ground signal Route lever (controlling route indicator) Lever collars
Blue	Facing point locks Clearance bar
Black	Points Scotches Derailers Quadrants, catch blocks and boxes
Blue (top) Black (bottom)	Combined points/facing point lock (including Power points and economic points)
Brown	Barriers Wicket gates Gate stops and locks Bridge locks Turntable locks
Green	Gongs Asking lever
White	Spare lever Fixed lever (Apparatus removed from lineside)
Blue (top) Brown (bottom) (Where specified for consistency within a limited geographical area, alternative colour schemes may be used.)	Release lever Switch lever Annetts key lever Bolt locking lever Direction Lever
Red (top) Brown (bottom)	Acceptance lever
Alternate brown and white stripes	King lever
Alternative black/white chevrons (Chevrons point up for up line or down for down line; on single lines, chevrons point in both directions.)	Detonators
Red (top) Alternate black/white chevrons (bottom) (Chevron direction as noted above.)	Signals working with detonator placers
Red (top) Yellow (bottom)	Combined home and associated distant signal (eg IB Signal)
White (top) Colour of original function (bottom) (Where specified for consistency within a limited geographical area, alternative colour schemes may be used.)	Levers worked to maintain locking or out of use and bolted secure but with locking still attached. Where the lever is to be operated, the lever top should be shortened and the requirement to pull the lever to maintain locking (or for interlocking purposes only) should be indicated to the signaller.
Additional horizontal white band	Any lever released from another signal box