The first speed limit reductions under the city of San Diego’s Comprehensive Speed Management Plan are now in effect in the South Bay, following an announcement by Mayor Todd Gloria.

Gloria joined city Transportation Department officials at Willow Elementary School in San Ysidro to announce that the surrounding neighborhood and Otay Mesa would see the first reductions in school zones — but work will continue throughout the city in coming weeks.

“Every San Diegan deserves to get home safely, whether they’re walking, biking, taking transit, or driving,” Gloria said. “Our first-ever Comprehensive Speed Management Plan is a smart, data-driven approach to improving traffic safety. Along with investments in safer street design and other improvements, this plan will help prevent crashes, save lives, and make it safer for everyone to travel through our neighborhoods.”

State law mandates speed limits posted above 25 mph require an engineering and traffic survey, which entails measuring the 85th percentile speed — essentially the speed most motorists are already traveling. But that process didn’t account for streets with higher safety risks such as school zones, areas with heavy bicyclist and pedestrian traffic and commercial zones, officials said.

(Photo: Reporting partner 10 News)