Police caught 684 people speeding at the weekend in a blitz on dangerous driving launched after a recent spate of serious road accidents. The early morning crackdown marked the second phase of a campaign to fight speeding and drink-driving. Twenty-three road blocks were set up across Hong Kong, Kowloon and the New Territories from 10 pm to 2 am yesterday as police used speed guns to catch offenders. A total of 566 vehicles were stopped. Police issued 522 fixed-penalty tickets and two summonses. Forty-five drivers were given breathalyser tests and five were arrested for drink-driving. Another 20 were stopped for seat-belt offences. Other offenders caught in the operation - some on automatic speed cameras - will be contacted later. A police spokesman said the campaign was launched because of an increase in serious road accidents. Last Tuesday, one person was killed and 12 injured when a bus careened over a pavement in Mongkok and into a snack shop. Five days earlier, three died and 10 were injured when an unmarked police car lost control in Central. Five people died and 280 were injured last week alone in car accidents. Yesterday, seven people were taken to hospital after a container truck hit railings and a road divider in Tsuen Wan Road at about 8 am. Debris from the truck hit a taxi travelling in the opposite direction, injuring the taxi driver and all five passengers. The driver of the truck managed to escaped injury. Debris from the truck also caused another car to crash, injuring that driver. Last night, all the victims were described as being in stable condition in Princess Margaret Hospital.