Speed cameras were placed at School of the Future, Stetson Middle School in Kensington, KIPP North Philadelphia Charter School, Widener Middle School on Olney Avenue and Sayre High School in Cobbs Creek.
Five high-priority zones were selected based on four years of crash data.
The cameras were placed near the schools in February and a 60-day grace period followed.
Tickets will only be issued when flashers are active during morning and afternoon school hours.
Anything over 15 mph could get you at least a $100 ticket in the mail. However, violations will not result in points against a driver's license, according to officials.
The goal is to get people to slow down and reduce crashes to protect school kids.
"Every student deserves a safe trip to school. In a city where 4 children are hit by a driver while walking each week, we must make bold moves to bolster traffic safety on dangerous roads around our school buildings," said Philadelphia City Councilman Isaiah Thomas, who sponsored new legislation renewing and expanding the city's automated speed enforcement program.
"We have tried many traffic calming methods to stop people from driving dangerously fast in school zones, but many drivers still speed," said Michael A. Carroll, City of Philadelphia Deputy Managing Director of OTIS. "We must ensure that students walking to school and home are safe, as well as the crossing guards who often put their lives at risk to get drivers to slow down. Speeding is the number one cause of fatal crashes, that's why slowing down drivers is a top priority for our Vision Zero program."
The executive director of the Philadelphia Parking Authority said they've seen dramatic results in reducing speeding and pedestrian-involved crashes with similar technology along Roosevelt Boulevard.
"Our school-zone speed camera program is about public safety and changing dangerous driving behavior," said PPA Executive Director Rich Lazer. "Our emphasis is on saving lives and protecting children."