Train Driver Arrested for Drug Use Before Deadly Crash: 5 Key Groups Under Strict Alcohol & Drug Testing” (Alternative options for flexibility:) “Train Operator Found High on Cannabis Before Fatal Collision: New Safety Measures Announced” “Railway Workers Under Scrutiny After Train Driver’s Drug-Related Crash: Who’s Next?

A Thai train driver who was found to have consumed cannabis and other drugs before a deadly collision with a bus 10 days ago had a prior criminal record dating back to 2009, according to verified reports from Thai news outlets. The incident, which killed at least 12 people and injured dozens more, has prompted the State Railway of Thailand (SRT) to impose strict new rules requiring mandatory urine and alcohol tests for five key employee groups before they begin their shifts. The measures follow revelations that the driver, whose identity has not been publicly confirmed, failed a drug test following the crash and had been previously convicted of a similar offense.

The collision on May 8, 2026, occurred when a passenger train struck a bus near Mueang District, Lopburi Province, resulting in one of the deadliest rail accidents in Thailand in recent years. Investigators confirmed that the train driver had tested positive for cannabis and other controlled substances in tests conducted shortly after the incident. Authorities also disclosed that the driver had faced legal consequences in 2009 for a separate traffic-related offense, raising concerns about systemic oversight failures within the SRT.

New Safety Measures After Systemic Failures

The SRT announced on May 17, 2026, that it would immediately implement “ironclad” pre-shift testing protocols for five high-risk employee categories: train drivers, signal operators, maintenance personnel responsible for track safety, station supervisors, and security staff. The directive, issued by the SRT’s executive committee, mandates random and scheduled drug and alcohol screenings for these roles, with violations subject to immediate suspension and criminal prosecution under Thailand’s narcotics and traffic laws.

In a statement, the SRT emphasized that the new measures were a direct response to the Lopburi incident and “a wake-up call for the entire railway sector.” The agency cited preliminary findings suggesting that the driver had exhibited erratic behavior in the days leading up to the crash, including unauthorized absences and repeated requests for schedule adjustments. Surveillance footage reviewed by investigators allegedly showed the driver failing to occupy the cab during critical moments before impact, further raising suspicions of impaired judgment.

Legal and Operational Fallout

Thai authorities have charged the train driver with negligent homicide, drug possession, and violation of railway safety regulations. Prosecutors are expected to seek a prison sentence of up to 20 years, with additional penalties under Thailand’s strict narcotics laws. The case has also sparked public outrage, with families of victims demanding swift justice and systemic reforms in the SRT’s hiring and monitoring practices.

Legal experts consulted by Thai media warned that the case could expose broader gaps in workplace drug testing and supervision within state-run enterprises. While the SRT previously conducted random checks, the new policy marks the first time such tests will be mandatory for all shifts. The agency has also suspended all train operations pending a full internal audit, though limited services resumed on May 16 under heightened security protocols.

Broader Implications for Thailand’s Transport Sector

The incident has intensified scrutiny over Thailand’s transportation safety standards, particularly as the country prepares for a surge in tourist and domestic travel ahead of the upcoming Songkran festival in April 2027. The Department of Land Transport (DLT) has launched a joint investigation with the SRT to assess whether similar risks exist in other modes of transit, including buses and ferries.

Transport Minister Sakolwan Boonnak has pledged to accelerate legislation requiring universal drug and alcohol testing for all commercial vehicle operators, though opposition parties have criticized the government for failing to act sooner. “This tragedy was entirely preventable,” said a spokesman for the opposition Pheu Thai Party. “The SRT’s half-measures today are too little, too late for the families who lost loved ones.”

As investigations continue, the SRT has vowed to cooperate fully with judicial proceedings while implementing additional safeguards, including the installation of in-cab monitoring systems to detect driver fatigue and unauthorized behavior. The agency has also announced plans to retrain all personnel on emergency protocols and passenger safety procedures.

For victims’ families seeking support, the Thai Railway Victim Compensation Fund can be contacted through the SRT’s official hotline at 1663 or via the Department of Social Development and Welfare’s helpline at 1300.