Write the points to be considered while erecting road signs.
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The points to be considered while erecting road signs are: i) The signs should be placed on the left hand side of the road. ii) Road sign should normally be placed at right angles to the pavement and facing the approaching traffic except in case of parking signs. iii) In location where the traffic sign may obstruct the vision to pedestrians, they should be mounted at a height of not less than 2.15m above the crown to the lowest edge of the sign. iv) The sign faces should normally be kept vertical, but on gradient it may be desirable to tilt a sign to improve the visibility. v) On kerbed road, the bottom edge of the lowest sign should not be less than 2m above the kerb and on unkerbed roads, the same should not be less than 1.5m above the crown of the pavement. vi) On kerbed roads, extreme edge of the sign adjacent to highway, should not be less than 60cm away from the edge of the kerb. 
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