Width of white lines
154. We recommend that the authorised width of longitudinal white lines should remain unaltered at not less than 4 in. nor more than 5in. Transverse lines should be 6 in. wide to counteract the foreshortening of the width as seen by the vehicle driver.
Materials
155. We do not think it necessary to specify particular materials to be employed for the marking of white lines. Considerations of economy and efficiency will often justify the use of materials of a permanent nature. It is essential that the markings should be maintained in good condition to give the maximum contrast with the adjacent road surface.
(B) OTHER TRAFFIC SIGNS ON THE CARRIAGEWAY
Look Left and Look Right
156. In one-way streets the use of the words “Look Left” or “Look Right”? on the carriageway in letters 12 in. deep with strokes 2 in. wide, is at present authorised. The warning is intended for pedestrians and should be displayed on pedestrian crossings where it will be seen by the pedestrian about to step off the pavement or central refuge, as-shown in diagram 123 of Appendix VI. We recommend continuance of these markings.
Markings for one-way traffic
157. Where one-way traffic working imposed by statutory Order or Regulation requires all vehicular traffic to turn to left or right, it may be helpful to supplement the standard roadside signs with markings on the carriageway. For this purpose the 1933 Provisional Regulations authorised the marking of the words “Turn Left” or “Turn Right” in letters 4 ft. in depth with 4 in. wide strokes, and the marking of guiding arrows with shafts 4 in. wide. We recommend no change in these markings.
Slow
158. At the approach to junctions in built-up areas and at similar places where drivers may on occasion be unable to see roadside warning signs, the use of the word “Slow” on the carriageway is authorised. The form and dimensions of the letters are shown in diagram 124 of Appendix VI. We do not recommend any change.
Halt and No Parking
159. We do not consider it desirable that the words “Halt”? or “No Parking” should be marked on the carriagewav.
Bus stops
160. We recommend that at authorised bus stops informative markings on the carriageway, indicating the position of the stop, should be permitted. The markings should consist of broken white lines indicating the section of the carriageway on which buses stand at the stop, and of the words “Bus Stop”inside these lines in letters 4 ft. deep. Where, in exceptional cases, statutory Regulations are made to prohibit waiting by other vehicles at the bus stop, the marking of the additional words “No Waiting” should also be authorised.
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