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It is very easy to hitch short distances in India on the back of someones motorbike. Even in the big cities, short lifts can easily be had. A foreigner flagging down a motobike is not a very common site, so often the first bike to see you will enthusiastically stop. Most bikes travel only short distances, a few km. Long jouneys will involve changing bikes very often. Works perfectly for example if you cant can't be bothered to walk half a km to the train station. Just flag down a bike, point in the right direction and off you go!