DIVISION OF THE CARRIAGE WAY LANES BY TRAFFIC LANE MARKINGS AND SCHEDULE FOR LONGITUDINAL STRIPS.

The design of pavement is governed by the traffic density,i.e , the number of vehicles using the road during peak hours and the maximum wheel load .The daily traffic volume is about 8to 10 times the maximum hourly volume The carriage way intended for one line of traffic movement is generally called a traffic lane and the width of separate parking lane , wherever provided ,may be kept 3 mt. Three -lane roads offer only limited advantage over the two lane-roads ,and are unsafe where the passing sight distance can not be provided .Four - lane roads should invariably be provided with median strips. The lines mark the division of carriage way lanes and are made 100to 125 mm wide , longitudinal strips and 150 mm wide transverse strips, set out in accordance with the schedule (a) On straight lengths of highway:  one meter lines with 4.6 metre gap ,2.7 metre lines with 2.7 metre gap ,1.5 metre lines with3 metre gaps (b) In town areas with heavy traffic: one metre line with one metre gap, one metre line with 2.7 metre gap.(c) At bends and near junctions : central continuous line extending 30 metres in each direction beyond the tangent points. Continuous lines are used to prohibit crossing. White and black strips have greater visibility than full white surface. White asphalt and mastic can be better .For painting purposes machines may be driven by a power sprayer .Plastic material have also been introduced for marking white lines which is applied hot by machine.