Civil Engineering - Highway Engineering - Discussion

On urban roads with less than four lanes, the centre line may be single broken line segments of 3 m long and 150 mm wide. The broken lines are placed with 4.5 m gaps.

On curves and near intersections, gap shall be reduced to 3 metres. On undivided urban roads with at least two traffic lanes in each direction, the centre line marking may be a single solid line of 150 mm wide or double solid line of 100 mm wide separated by a space of 100 mm.

@Vivek is right.

Thanks @Garry.

It is width not thicknes.

The thickness of the broken line marking on multi Lane Road for highways varies with the type of Highway is it rural Highway or urban Highway or undivided Highway or divided Highway the minimum thickness for all these cases is 10 cm so it can be adopted as an answer if asked for the minimum.