https://www.mercurynews.com/2019/10/04/wrong-way-crash-part-of-troubling-trend-chp-says/

A wrong-way crash in San Francisco that killed four people on Thursday is part of a troubling trend, according to California Highway Patrol.

Amid spiking arrest rates for driving under the influence, CHP is considering new ways to combat both DUI crashes and wrong-way drivers. And they’re deeply intertwined: So far in 2019, CHP has counted 25 wrong-way collisions across the Bay Area’s nine counties, said spokesperson John Fransen, 18 of which involved a DUI driver.