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Circles give orders Special routes
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Triangles warn Special routes
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Rectangles inform Special routes
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Blue circles generally give a mandatory instruction, such as ‘turn left’, or indicate a route available only to particular classes of traffic,… Special routes
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Red rings or circles tell you what you must not do, e.g. you must not exceed 30 mph, no vehicles over the height shown may proceed Special routes
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Blue rectangles are used for information signs except on motorways, where blue is used for direction signs Special routes
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Green rectangles are used for direction signs on primary routes Special routes
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White rectangles are used for direction signs on non-primary routes, or for plates used in combination with warning and regulatory signs Special routes
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There are a few exceptions to the shape and colour rules, to give certain signs greater prominence. Examples are the ‘STOP’ and ‘GIVE WAY’ signs Special routes
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Distance to STOP line Warnings Common set
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Distance to GIVE WAY line Warnings Common set
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Traffic signals ahead Warnings Common set
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Traffic signals that operate only at certain times Warnings Common set
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Crossroads Warnings Common set
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T-junction Warnings Common set
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Side road Warnings Common set
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Staggered junction Warnings
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Traffic merges from the left Warnings
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Traffic merges onto main carriageway Warnings
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Roundabout Warnings Common set
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Bend to right (left if symbol reversed) Warnings Common set
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Double bend first to the left (right if symbol reversed) Warnings Common set
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Junction on a bend (symbols may be reversed) Warnings Common set
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Junction on a bend (symbols may be reversed) Warnings Common set
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Plate used with ‘roundabout’ or ‘bend’ signs Warnings
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Risk of lorries overturning on bend to the left (right if symbol reversed) Warnings Common set
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Sharp deviation of route to the left (right if chevrons reversed) (alternative designs) Warnings
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Sharp deviation of route to the left (right if chevrons reversed) (alternative designs) Warnings
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Plate used with warning signs where a reduction in speed is necessary Warnings
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Road narrows on both sides Warnings Common set
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Road narrows on right (left if symbol reversed) Warnings Common set
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Plate used with ‘road narrows’ signs: oncoming vehicles in middle of road Warnings
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Single-file traffic in each direction Warnings
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Road wide enough for only one line of vehicles Warnings
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End of dual carriageway Warnings Common set
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Two-way traffic Warnings Common set
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Two-way traffic on route crossing ahead Warnings Common set
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Near-side edge of carriageway or obstruction near that edge (alternative shapes). White markers are used on the off-side edge and amber ones on… Warnings
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Near-side edge of carriageway or obstruction near that edge (alternative shapes). White markers are used on the off-side edge and amber ones on… Warnings
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Worded warning. ‘Ford’ may be varied to ‘Flood’, ‘Gate’, ‘Gates’ or ‘No smoking’ Warnings
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Try brakes after crossing a ford or before descending a steep hill Warnings
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Steep hill downwards (10% is equivalent to 1:10) Warnings
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Steep hill upwards (20% is equivalent to 1:5) Warnings
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Sign used with ‘steep hill’ or ‘try your brakes’ signs Warnings
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Plates used with ‘steep hill’ signs Warnings
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Plates used with ‘steep hill’ signs Warnings
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Plates used with ‘steep hill’ signs Warnings
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Opening or swing bridge Warnings
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Quayside or river bank Warnings
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End of bridge parapet, abutment wall, tunnel mouth etc Warnings
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Water course alongside road Warnings Common set
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Soft verges for distance shown Warnings
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Tunnel Warnings
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Hump bridge Warnings
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Uneven road Warnings
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Slippery road Warnings Common set
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Side winds Warnings
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Distance to hazard Warnings
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Distance and direction to hazard Warnings
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Distance over which hazard extends Warnings
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Low-flying aircraft or sudden aircraft noise Warnings
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Gliders likely Warnings
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Low-flying helicopters or sudden helicopter noise Warnings
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Risk of falling or fallen rocks Warnings
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Traffic queues likely ahead Warnings
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Slow-moving military vehicles likely to be in or crossing the road Warnings
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Slow-moving vehicles for distance shown Warnings
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Risk of ice. ‘Ice’ may be varied to ‘Snowdrifts’ Warnings
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Warning of signals. ‘FIRE’ may be varied to ‘AMBULANCE’ or ‘POLICE’ Warnings
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Other danger. The plate indicates the nature of the hazard Warnings
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Zebra or parallel crossing Warnings
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Pedestrians in road for distance shown Warnings
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