Police have obtained a four-day remand order for the bus driver who rammed his vehicle into 10 cars on the PLUS highway yesterday.

The 51-year-old will be in police custody from today until Thursday for investigations.

Earlier today, Perak traffic police chief Supt Wan Jamil Wan Chik said the driver had nine summonses for various traffic offences from 2011 to 2015.

Apart from the driver, the bus company had also been issued with 63 summonses.

He also said that the express bus driver, who was arrested by the police yesterday, tested negative for drugs.

READ: Driver, company of runaway bus riddled with traffic summonses

READ: Bus rams into 10 cars at PLUS highway

Yesterday, a video captured on a surveillance camera which has since gone viral on social media, showed the bus exiting the Menora Tunnel at high speed before ramming into several vehicles.

The accident reduced traffic to a crawl over 11km stretch.