Another bicyclist was killed in the Big Apple on Monday morning — bringing the death count to 18 this year.

The cyclist was hit by a commercial truck while riding north on 3rd Avenue, near 35th Street in Sunset Park, just after 9 a.m. when he swerved into the road to avoid an opening car door, according to the NYPD.

Em Samolewicz, 30, was rushed to NYU Langone Hospital–Brooklyn, where she died, cops said.

The truck driver stayed at the scene and no arrests have been made, according to police. The cyclist was not wearing a helmet, cops said.

The death of the 18th city biker comes less than a week after two cyclists were fatally struck just hours apart in the Big Apple.

The mayor has referred to the increase as an “emergency.” Seven cyclists were killed in the first six months of 2018.