DOT random drug testing for CDL drivers is pretty much exactly what it sounds like

FMCSA and CDL drivers and employee names are placed into a DOT random drug testing pool and are randomly selected via a computer-generated selection process. All employees in the testing pool have an equal chance of being chosen for the DOT random drug testing. Once a FMCSA and CDL driver is selected, he or she must immediately report for the test in order to prevent the opportunity to rid their system of any illegal drugs. 

DOT random drug testing for CDL drivers helps both truck drivers and companies remain compliant and keep the roads safe.

A DOT random drug testing pool for CDL drivers also helps:

• Reducing absenteeism and downtime.
• Improving attendance & employee productivity.
• Preventing needs & costs of substance abuse recovery programs.
• Providing a safer workplace with reduced accidents.
• Limiting drug abusers from applying to your company.

How Does Random Drug Selection Work?
It’s as simple as your drivers’ names being put into a testing pool. A computer-generated selection will be made so that all employees have an equal chance of being chosen for drug testing. Once a driver is selected, he or she needs to report for their test immediately in order to prevent the opportunity to rid their system of any illegal drugs.