For this purpose a transverse broken double white line is recommended for use halfway across the mouth of the minor road supplemented by a longitudinal warning line. In the case of one-way roads the transverse lines should be wholly across the mouth of the road. The longitudinal warning line should not be used where the carriageway is less than 18 feet wide (paragraph 224).
This marking should be used always where there is a roadside Give way sign and as widely as possible at other junctions not controlled by traffic signals, police or Stop signs . It should be prescribed as a warning sign and should be explained in the Highway Code as having the meaning 'proceed so as not to cause inconvenience or danger to traffic on the major road' (paragraph 224).
Transverse solid white lines should be reserved for use with traffic signals and Stop signs and where there is police control. It should be permissible to use a wider transverse solid white line than at present (paragraph 225) .
The present double white line system is thought to be a valuable aid to safety if used with discretion and no change in its form is recommended. But there should be a greater use of offset double white lines on long three-lane hills. Double white lines should not be used on the approach to roundabouts, pedestrian crossings or road junctions. Subject to current experiments the use of offset double white lines to allocate the centre lane of three-lane roads alternately to opposite streams of traffic seems likely to be useful on winding roads but if used on straight, level roads would not be observed by drivers (paragraph 226).
A more emphatic hazard warning marking is required and trials should be carried out to determine how this should be achieved.
Warning lines at the approaches to junctions and other hazards should more frequently be extended beyond the minimum length now recommended (paragraph 227).
Lane lines and edge of carriageway markings on fast all-purpose roads should be more emphatic (paragraphs 228 and 229).
The word 'Slow' should continue to be allowed as a carriageway marking to supplement roadside warning and advance direction signs as necessary (paragraph 231).
As an advance warning of a Give way sign it should be permissible to paint a hollow white inverted triangle or the words 'Give way' on the carriageway whichever is found by experiment to be the more effective (paragraph 232).
The word 'Stop' should always be used on the carriageway to supplement the roadside Stop sign. 'Halt' should cease to be used (paragraph 233).
The words 'Bus stop', 'Taxi rank', 'Look right/left' should continue to be used in their present form (paragraph 234).
There should be more use on the carriageway of direction arrows and place names. They should be set well back from the junction and should be within lane lines (paragraph 235).
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