TULARE COUNTY, Calif. (KFSN) -- On foggy days, transportation directors across South Valley school districts are making one of the most important calls: whether to delay or cancel school buses due to dangerously low visibility.

"Probably about 5:30 opening the door, seeing if we are foggy. I have four or five spotters, plus I call the surrounding schools around me," says Pixley Union School District Transportation Director Shelly Munoz. "If we are poll to poll, then I put us on a foggy day schedule."

Munoz has been driving buses for 28 years.

She was once a student at Pixley Union School District; now she's the Transportation Director.

Their buses take almost half of their 800 students to campus.

"It is a huge responsibility because I don't want to let anyone down, I know these 5 to

See Full Page