Stomp understands that the 'man' who threw himself on the vehicle was actually a woman.
She had been in emotional distress and was drunk.
Following the incident, the driver called the police but both the man and woman in the video left before officers arrived.
In response to a Stomp query, a police spokesman said: "On Nov 5, 2017 at 5.56pm, the police received a call for assistance along Beach Road.
"The police are investigating a case of rash act."
A video clip of a man feigning injuries after deliberately running into an oncoming vehicle has left netizens in stitches.
The dashcam footage posted by Facebook user Jacky Ang showed a vehicle as it was traversing down the middle lane of road on Sunday (Nov 5) at 5.48am.
The driver was seen slowing his vehicle down to a stop when he noticed a man running towards him along with an accomplice in the leftmost lane.
The man then threw himself onto the windscreen of the vehicle and landed on the road. He held his stomach as if he was in excruciating pain.
Meanwhile, his accomplice ran up to him and chastised him.
According to a netizen, the incident happened near Golden Mile Complex.
Another netizen said that this was not the first time such a thing had happened in Singapore, while others took the chance to highlight the importance of having a dashboard camera in their vehicles.