A tiny infant caused a big traffic jam in Manhattan — when a baby girl debuted in the back of a taxi in the middle of rush hour.

The unnamed mom went into labor in the yellow cab at 14th Street and 10th Avenue around 6 p.m. Thursday, police said.

By the time the NYPD arrived at the scene, the baby had already been born. Cops cleared the baby’s airways while waiting for an ambulance.

The officers caught up with the mom and baby at the hospital later, posing for a photo with the pair.

“Great job by Officers Gutierrez and Rivera who arrived in perfect timing,” the 6th Precinct captioned the shot posted to its Twitter feed.