Convention on Road Sings and Signals
ANNEXES
Annex 2
ROAD MARKINGS
Chapter IV
Other markings
A. Arrow markings
39. On roads having sufficient traffic lanes to separate vehicles approaching an intersection, the lanes which traffic should use may be indicated by arrow markings on the surface of the carriageway (diagrams 2, 3, 19 and 23). Arrows may also be used or a one-way road to confirm the direction of traffic. The arrow should not be less than 2 m long. They may be supplemented by word markings on the carriageway.
B. Oblique parallel lines
40. Diagrams 24 and 25 give examples of areas which vehicles should not enter.
C. Word markings
41. Word markings on the carriageway may be used for the purpose of regulating traffic or warning or guiding road users. The words used should preferably be either place names, highway numbers or words which are easily understandable internationally (e.g. "Stop", "Bus", "Taxi").
42. The letters should be considerably elongated in the direction of traffic movement because of the small angle at which they are seen by approaching drivers (diagram 20).
43. Where approach speeds exceed 50 km/h (30 m.p.h.), the letters should be at least 2.5 m in height.
D. Standing and parking regulations
44. Standing and parking restrictions may be indicated by markings on the kerbs or on the carriageway. Parking space limits may be indicated on the surface of the carriageway by appropriate lines.
E. Markings on the carriageway and on adjacent structures
(i) Markings indicating parking restrictions
45. Diagram 26 gives an example of a zigzag line.
(ii) Marking of obstructions
46. Diagram 27 gives an example of a marking on an obstacle.