Why Indian Highways Have Coloured Milestone???

Milestones. And by this word, we do not mean a career milestone but a literal one. These are the colourful stones we find on the side of highways and village roads notifying the distance to a location. Often getting neglected owing to the GPS-enabled smartphones these days, there was a time when these stones were the most reliable source of information about the kilometres you need to cover to reach your destination.

You remembered, right? But, have you ever noticed these 'milestones' are of different colours?

India's road network is 56 lakh km long and milestones are colour coded to distinguish between national highways, state highways and village roads.

Milestone???