Operation Safe Roads: What to do at a four-way stop if the power is out Our monsoon is almost here, which could mean big storms that knock out traffic signals -- so what do you do when that happens? and last updated 2021-06-03 08:55:42-04 PHOENIX â Monsoon storms will soon make their way into the Valley. The season officially starts on June 15, and with the downpours, there is a possibility the power can go out. Then, you could be stuck in the driver's seat at a traffic signal that does not work. So, what do you do? Jennifer in Mesa reached out to Operation Safe Roads in an email to roads@abc15.com in 2019 writing, "The traffic lights stopped working and I was three cars back and NO ONE was moving. After five long minutes... one truck went across. It seems like people don't know that when a traffic light goes out... I was wondering if this is something you would like to talk about."