What is the science behind the speed zones on roads and how a fatality due to increased speed can have on the body

ਸੜਕਾਂ ‘ਤੇ ਸਪੀਡ ਜ਼ੋਨ ਪਿੱਛੇ ਕੀ ਵਿਗਿਆਨ ਹੈ?

Dr. Sandeep Tiwari, a renowned Orthopaedic Surgeon, explains the need for speed zones.