Setting out site

(Distances in metres unless stated otherwise, numbers are minimum numbers)

Type of road	Minimum visibility distance to first sign	D Distance from first sign to start of lead-in taper	Lead-in taper								S Minimum width of sideways safety zone	E Distance from last cone to End of works sign	Minimum size of signs (mm)
				Width of works including sideways safety zone
				1m	2m	3m	4m	5m	6m	7m
Single carriageway - speed limit 30 mph or less	60	20 to 45	T Taper length	13	26	39	52	65	78	91	0.5	10 to 30	600
			No of cones	4	4	6	7	9	10	12
			No of lights	-	-	-	-	-	-	-
Single carriageway - speed limit 40 mph	60	45 to 110	T Taper length	20	40	60	80	100	120	140	0.5	30 to 45	750
			No of cones	4	6	8	10	13	15	17
			No of lights	3	5	7	9	12	14	16
Single carriageway - speed limit 50 mph or more	75	275 to 450	T Taper length	25	50	75	100	125	150	175	1.2	30 to 45	750
			No of cones	4	7	10	13	15	18	21
			No of lights	3	6	9	12	14	17	20
All-purpose dual carriageway - speed limit 40 mph or less	75	275 to 450	T Taper length	25	50	75	100	125	150	175	1.2	30 to 45	750
			No of cones	4	7	10	13	15	18	21
			No of lights	3	6	9	12	14	17	20

Speed limit mph	20	30	40	50	60
L Longways clearance	0.5	0.5	15	30	60

Speed limit mph	30 or less	40 or more
C Clearance to works vehicle	2	5

Notes

For roads covered by this Code, the minimum height of cones is 450 mm where the speed limit is 40 mph or less, and 750 mm where the speed limit is 50 mph or more
The maximum spacing between cones in longitudinal lengths shall be 9 metres, but no fewer than two cones shall be used in any length between tapers.
Lead-in tapers where two-way traffic control is used, and all exit tapers shall be at about 45º to the kerb line with cones spaced 1.2 metres apart maximum.
In certain circumstances on congested roads with speed limits of 30 mph or less, the lead-in taper may be reduced to 45º (see page 19).
The longways clearance (L) is the distance between the end of the lead-in taper and the first traffic barrier placed across the lane.