The City Superintendent of Police (CSP), Virendra Singh Tomar said the incident took place near village Maanpura last night.
The mishap occured when the victims reached near village Maanpur and a car hit them killing Suresh Singh and his wife Rani Devi on the spot while their son Yogesh (13) who was critically injured died in a hospital during treatment.
After the incident, local residents staged a dharna and blockade on the Bhind-Gwalior National Highway 92 and demanded compensetion from the government.
Police have registered a case and started investigations.