BUTTE COUNTY, Calif. — Caltrans has installed a permanent advance warning system at the intersection of northbound State Highway 99 and Neal Road south of Chico.

Motorists will see an electronic board displaying the message “Caution Slow Traffic Ahead” when vehicle speed slows to 25 miles per hour or less at the traffic signal-controlled intersection.

The message will stay on until vehicles resume traveling above 25 miles per hour.

“Caltrans has worked with the California Highway Patrol and local partners to implement a series of safety measures on northbound Highway 99,” said Amarjeet S. Benipal, Caltrans District 3 director. “The new intersection advance warning system upholds our commitment to help motorists arrive safely to their destinations.”

Other safety countermeasures include the installation of two traffic signal warning signs with flashing beacons and rumble stripes placed across the two northbound traffic lanes.

These transverse rumble stripes are made of thermoplastic material which, when driven over, create noticeable sound and vibrations to warn drivers of an approaching intersection where they may be required to slow down or stop.

Caltrans District 3 maintains more than 4,385 lane miles of state highway in 11 Sacramento Valley and Northern Sierra counties.