Rickshaws pulled by men and auto rickshaws are commonplace. Many migrants from Bihar and rural West Bengal are involved in rickshaw pulling. In southern Kolkata, the rickshaws pulled by men have been replaced by cycle rickshaws. Fares are usually set by the rickshaw unions. These rickshaws usually operate over short distances due to the manual effort involved, and mainly run on narrow lanes where buses and auto-rickshaws don't ply. These Rickshaws are not allowed to ply over main roads of Kolkata. Hand pulled rickshaws are mainly found in old localities of North Kolkata and some old localities of South Kolkata. Moreover, Cycle rickshaws are also a common transport in many localities of kolkata. They also ply on narrow lanes and not allowed to ply over main roads.