Two persons, riding a motorcycle, were killed when their vehicle was hit by a mini-truck at Sikandrabad in Dankaur area.
The dead were Sewa Ram and his father-in-law Rishipal, police said.
A truck overturned after his tyre burst killing the driver and injuring his son in Jewar area on the Yamuna Expressway, they said.
In another accident, a person, crossing the road, was killed when he was hit by a vehicle on the Yamuna Expressway.
His identity was yet to be established, police said.