Clementi MRT station
On 5 August 1993, at around 7.53 am, two trains collided in the station. It appeared that one train had stopped at the station for longer than usual after experiencing a technical fault, and then a second westward train hit the first. It was caused by a 50 litre oil spill. 156 commuters were injured, many of whom were on their way to work. Eight were admitted to three hospitals, while the rest received outpatient treatment. In the aftermath of the accident, SMRT said that it would replace the faulty maintenance locomotives and purchase new ones. It also introduced a new policy for station managers to inspect tracks for oil or foreign objects before the start of service.