The new 5912 bill has changes to the impaired driving laws in relation to Marijuana in Washington State.

The bill adds the exhibiting the effects of recently consumed marijauana to the negligent driving in the first degree. Also adds THC levels to the list of violations of which require a 30 day sentencing.

Laws relating to commercial drivers have also changed.

New CDL disqualifications were created for driving a cmmercial vehicle "with any measurable amount of THC" in the system, and for driving non-commercial vehicles with THC at or above the per se limit.