The injured motorcyclist was seen lying in the middle of road, with umbrellas placed to shield him from the sun.
The new speed camera became operational on 1 July.
The truck was believed to have self-skidded, said the police.
The 24-year-old man took a direct hit as he was paddleboarding in a standing position.
The police have arrested the 46-year-old for voluntarily causing grievous hurt with a weapon.
Netizens advised the OP to call TrafficWatch or LTA for help next time.
Mr Siow said that people can stop asking why the Circle Line isn't a circle.
He paid the RM20,000 (S$6,400) fine on the same day after pleading guilty to avoid jail.
The man refused to receive any payment, telling the tourist to save it for her travels.
SBS Transit also wished Go-Ahead Singapore well as they "take over the wheel".