As Mayor de Blasio repeatedly hits the road for his quixotic presidential campaign, the streets of New York City are becoming a bloodbath.

Traffic crashes have already killed 71 people this year, up from 58 during the same time period in 2018 — a 22 percent surge — according to NYPD data.

The tragic body count ticked higher Saturday, when a BMW struck a 55-year-old man crossing Lenox Avenue in Harlem around 4 a.m., police said.

He was the 39th pedestrian killed this year. Drivers or passengers in vehicles accounted for the other 22 fatalities on city roads.

Cyclists are also falling victim to perilous streets, with 10 deaths so far this year — the same number as in all of 2018, when all traffic deaths reached an historic low, according to the NYPD’s TrafficStat database.

Cycling advocates fear the mayor is “losing focus” of his Vision Zero initiative to eliminate traffic fatalities while he constantly leaves town to campaign. The mayor has spent five days on the road since announcing his run on May 16.

“Now that it’s clear that the promise of Vision Zero is slipping, the mayor needs to remember to stay focused on his primary duty, and that’s public safety,” said Joe Cutrufo of Transportation Alternatives, an advocacy group.

De Blasio launched Vision Zero in 2014 to target “problem streets” for safety improvements, such as re-timed traffic signals, bike lanes and new signage. The city also reduced the speed limit to 25 mph on most streets.

The administration credited Vision Zero with five straight years of declining traffic-related fatalities.

But advocates were recently alarmed by three cyclist deaths in Brooklyn in the same week: 29-year-old Robert Sommer on May 12 in Marine Park, 16-year-old Yisroel Schwartz on May 15 in Borough Park, and 22-year-old Kenichi Nakagawa on May 16 in Crown Heights.

The trend has created tensions between City Hall and some cyclists, who claim they often get the blame when tragedy strikes.

When Aurilla Lawrence was killed by a hit-and-run oil truck in February, her father blasted cops for allegedly ticketing cyclists the next morning on the same block.

“People on bikes aren’t the ones maiming and killing people — it’s the cars and trucks,” Kenny Lawrence wrote in an open letter to de Blasio.

But some New Yorkers do blame cyclists for the carnage.

In April, a 4-year-old girl was sent to the emergency room with a gashed forehead after she was mowed down by a Riverside Park biker.

“We have a lot of seniors in our district who feel very anxious in the street,” said Sarah Crean, a spokeswoman for Upper West Side Councilwoman Helen Rosenthal. “They step out into the intersection and the bikes are coming from different directions.”

Citywide, the NYPD has issued more bicycle summonses this year: 13,087 as of May 19, a 13 percent increase from last year.

A spokesman for the mayor’s office defended Hizzoner’s “laser focus on Vision Zero,” claiming it is “not changing.”

“Saving lives will always be the mayor’s top priority,” said Seth Stein, noting de Blasio announced Friday that the DOT would install 40 new speed cameras per month starting in July and 60 per month in 2020.

DOT spokeswoman Lolita Avila said, “In a 10 year period, we will have invested $2.7 billion in Vision Zero. Last year, we completed over 100 safety improvement projects, and expect to keep up a similar aggressive pace this year.”

Additional reporting by Tina Moore and Stephanie Pagones