A doctor driving a Hyundai Venue and another person in the car were critically injured when he apparently lost control and rammed into a Metro pillar near the Avishikta crossing early on Thursday, police said.

The vehicle overturned on impact and landed on another four-wheeler moving in the same direction, the police said.

Two other people in the Venue and the occupants of the other car escaped unhurt.

The doctor, attached with a private medical college and hospital, has been admitted to the ICU of KPC Medical College and Hospital with head injuries. The other person, attached with a city veterinary college, too, is in the ICU with arm injuries, the police said.

The doctor has been booked for rash and negligent driving, mischief and causing hurt by a rash and negligent act so as to endanger human life.

Occupants of the other vehicle have lodged a complaint against the doctor with Garfa police station.

The vehicle was headed towards Garia from the Ruby crossing when the accident occurred around 1.05am. “It is apparent the vehicle was moving at high speed. It is sheer luck that all four occupants survived,” a traffic police officer said. “Also, it is a miracle that occupants of the other car escaped unhurt.”

Several motorists who drive on the stretch said it was difficult to negotiate the Metro pillars. “There are stretches where one has to drive slowly to negotiate the pillars that have come up in the middle of the road. A slight lack of concentration or speeding can prove costly,” Debraj Chatterjee, who travels on the Bypass every day, said.

Officers of Garfa police station said the Venue would undergo a mechanical examination to ascertain the exact cause of the accident.

The doctor lives in Jadavpur while the other occupants are from Garia and Kamalgazi on the city’s southern outskirts and Nadia district.