Concerning impaired driving.

Washington's SB 5782 updates impaired driving laws by establishing a 0.08% blood alcohol concentration (BAC) limit and a 5.00 ng/mL THC concentration limit for DUI charges. It creates new affirmative defenses allowing defendants to prove they consumed alcohol or cannabis *after* driving but *before* testing, but requires them to notify prosecutors early in the case. The bill also clarifies that blood/breath tests taken over two hours after driving can still be used as evidence for impairment. Repeat offenses involving prior DUI convictions or vehicular crimes become class B felonies, while first offenses remain gross misdemeanors. This directly affects drivers in Washington facing DUI charges, particularly those using cannabis.