Paragraph 7 TramcarsI1

the horizontal line conveys the prohibition that a tramcar must not proceed beyond the stop line;

the vertical line indicates that a tramcar may proceed beyond the stop line and proceed straight ahead;

the diagonal line shown in the diagram at item 5 indicates that a tramcar may proceed beyond the stop line and proceed to the left;

the diagonal line shown in the diagram at item 6 indicates that a tramcar may proceed beyond the stop line and proceed to the right; and

the central circle conveys the prohibition that a tramcar must not proceed beyond the stop line except that, as respects a tramcar which is so close to the stop line that it cannot safely be stopped without proceeding beyond the stop line, it conveys the same indication as the aspect which was shown immediately before it.