Eight months into Vision Zero, and after weeks of targeted enforcement during “Operation Safe Cycle,” department data show NYPD isn’t moving the needle much on cyclist injuries and deaths.

Transportation Commissioner Polly Trottenberg announced Wednesday that drivers have killed 17 city cyclists so far this year. That’s a 142 percent increase from the first nine months of 2013 — but fatalities can vary widely from year to year, and with 10 total deaths, 2013 marked a record low. This year’s figures are on par with 2012, when motorists killed 17 people on bikes through September, according to NYPD.

Injuries are not as prone to random variation, and numbers have held relatively steady for the last three years. Through August 2014 (the latest data available), NYPD reported 2,575 cyclist injuries. There were 2,684 and 2,599 cyclist injuries through August of 2013 and 2012, respectively. Thanks to new bike lanes and Citi Bike, more people are cycling in New York, so any given cyclist is safer, but to reduce the absolute number of injuries and deaths, NYPD has to raise its game.

Based on NYPD crash reports from the late 90s, research from Charles Komanoff and Right of Way showed that driver behavior was the principal cause of 57 percent of crashes that resulted in cyclist deaths, and that motorists were partly responsible for an additional 21 percent of cyclist fatalities [PDF]. Leading causes of crashes were unsafe passing, drivers turning in front of cyclists, speeding, and drivers running red lights and stop signs.

NYPD summons reports show police are citing more drivers for speeding, running red lights, and failure to yield than in 2013 and 2012, while enforcement for driving while using a cell phone is down. Enforcement continues to lag in significant ways, however. For instance, one of the most valuable tools police now have to deter traffic violence — Section 19-190, the new law that makes it a crime for a driver to injure a pedestrian or cyclist who has the right of way — remains virtually unused.

Targeting those who are being harmed won’t get NYC to Vision Zero. To reduce cyclist injuries and deaths, NYPD has to reduce the incidence of motorist behavior that puts others at risk.