The Traffic Signs Regulations and General Directions 2016

15.—(1) When placed on a slip road, the leading edge of each bar marking must be placed at the appropriate distance specified in the table below.

(2) For the purposes of this paragraph—

(a) each bar marking is referred to in the table below by the capital letter D followed by a number;

(b) a bar marking is placed at the appropriate distance specified in the table below if the distance between the point at which the leading edge of the marking is placed and the point at which the leading edge of bar marking D1 is placed is the distance specified in relation to the marking in the table;

(c) the distance specified in relation to a bar marking is the distance in metres which appears immediately below the reference to the bar marking in the table below.

Bar no.		D2	D3	D4	D5	D6	D7	D8	D9	D10	D11	D12	D13	D14	D15
Distance to D1 (m)		2.75	5.55	8.45	11.35	14.35	17.40	20.50	23.70	26.90	30.20	33.55	37.00	40.50	44.05
Bar no.	D16	D17	D18	D19	D20	D21	D22	D23	D24	D25	D26	D27	D28	D29	D30
Distance to D1 (m)	47.70	51.45	55.30	59.20	63.15	67.20	71.35	75.60	79.90	84.30	88.80	93.45	98.20	103.00	107.90
Bar no.	D31	D32	D33	D34	D35	D36	D37	D38	D39	D40	D41	D42	D43	D44	D45
Distance to D1 (m)	112.90	118.00	123.30	128.70	134.20	139.80	145.50	151.35	157.40	163.60	170.00	176.70	183.90	191.60	199.30