As city government continues to grapple with traffic deaths, the San Francisco Police Department’s traffic arm is ramping up speeding tickets in the name of safety.

SFPD’s traffic company issued 455 speeding violation citations July 2016, the latest numbers available, which is a 121 percent increase over the same time last year, when 376 speeding citations were issued.

Commander Robert O’Sullivan, the new head of traffic company, said the speeding enforcement targeted “high-injury corridors” since the end of June.

High injury corridors are those identified by The City as most likely to see traffic deaths and injury due to vehicles speeding and exhibiting other dangerous driving behaviors.

O’Sullivan said traffic company focused on Folsom Street, Fulton Street, San Jose Avenue and Golden Gate Park among other areas.

The SFPD’s Focus on Five ticketing effort is part of San Francisco’s Vision Zero goal, to reduce traffic deaths on city streets to zero by 2024.