JPJ senior enforcement director Lokman Jamaan said the results were based on urine tests conducted on the drivers, who are in their 30s to 60s, by the national anti-drug agency before they had started their journey, Bernama reported.

“Two bus drivers were detained in Alor Setar as they were about to begin their trip to the east coast, two drivers were nabbed in Sarawak and one was detected in Kota Bharu, Kelantan.

“It is most saddening that some of them are more than 60 years old. That was unexpected,” he told reporters at the Shahab Perdana bus terminal in Alor Setar, Kedah last night.

“We will continue to conduct such operations together with the national anti-drug agency.”

Lokman urged the public to report all errant bus drivers, including those who use their phones while driving, by sending the details through the MyJPJ mobile app.

He said 163,558 vehicles were inspected in the weeklong operation, which resulted in 1,495 vehicles being impounded and 39,066 summonses issued for various traffic offences against the drivers and bus companies.

The offences included driving without a valid licence, expired road tax, speeding and technical violations.

“JPJ views the offences seriously and will not compromise with the bus company, owners and drivers concerned. Stern action will be taken to ensure the safety of road users,” he said, according to Bernama.