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Colour Code:
Colours constitute the visual language of the road. Lebanese norms define an obligatory specific usage for every colour:
Green: for highways
Blue: to link towns with each other
White: for local indications inside a town
Brown: for touristi or cultural signs
Yellow: for temporary directional signs related to public works

Techniques for good legibility:
It is fundamental to have signs legible in both day time and night time. A secure sign requires the usage of reflective sheeting coating, the scotchlite. Both ENGINEER GRADE or HIGH INTENSITY insure, for at least 5 to 7 years, the necessary contrast level. It is used on the majority of directional road signs either because of its duration, the obligation of its usage for gantry signs, or for signs at a high angle, or for its homogeneity with the crossroad. In Order to optimize sign investment, it is essential to use a very well-proportioned character height and increase character spacing by 100% in order to make the signs legible for all.

Fonts:
- The french letter is british transport Medium.
- The Arabic letter is Al Naskh Regular.
The first letter in the Frensh lettering is capital and the remaining letters are small letters. The proportion is 1.4 between the capital and the small letter and it is 2.4 between the arabic tile and the small letter.
- The use of Frensh is obligatery for the directional sign.

Sign Arrows:
- Vetical arrows directed upward for straight movement at crossroads with evident geometry.
- Horizontal arrows to the right or to the left for turning movement at crossroads in T or classic X shape.
- Oblique arrows to the left upward at 45 degree to the right or to the left for concerned movement at crossroads in Y shape.