Police and anti-drunk-driving advocates are stepping up sobriety checkpoints on Oahu before Labor Day weekend, which is bad news for drunk drivers and good news for everyone else on the road.

• A checkpoint ran along Kualaka'i Parkway in Kapolei as part of the push.
• The effort, branded "Saturation Saturdays," aims to cut DUI numbers heading into the holiday weekend.
• Labor Day weekend is one of the heaviest drinking-and-driving stretches of the year.
• Federal health data says sobriety checkpoints can cut drunk driving deaths by up to 20%.

Outlook: Expect more checkpoints across Oahu through the holiday weekend.