In the wake of two pedestrian deaths caused by collisions with bicycles, Central Park has lowered the speed limit for cars and bicycles to 20 miles per hour from 25, while reconfiguring intersections with especially heavy foot traffic.

In four of the busiest locations, the recommended speed is 10 miles per hour, and workers recently installed additional “Pedestrian Crossing” signs there to warn bicyclists.

“There’s no question: Slower traffic will mean a safer park,” said Douglas Blonsky, president of the Central Park Conservancy, the nonprofit group that operates the park on behalf of the New York City parks department.

The safety improvements were planned in recent months by the transportation, parks and police departments, along with the conservancy. They follow an accident in mid-September in which a Connecticut woman, Jill Tarlov, was struck by a bicycle on West Drive near West 63rd Street. She died a few days later.