The New York Police Department has sent Google a cease-and-desist letter, demanding that the company remove a feature that lets users know where police checkpoints are in real time.

The feature in question appears on Waze, the navigation app that Google purchased back in 2013. It works like a crowd-sourcing social network in which users inform others of road conditions, police checkpoints, speed cameras, potholes and traffic.

According to the Feb. 2 letter, the NYPD asked Google to take precautions, ensuring that NYPD’s checkpoint data isn’t uploaded or posted on the company’s map applications like Google Maps to reveal the locations of police officers and subsequently enabling drivers to avoid DWIs.

"Individuals who post the locations of DWI checkpoints may be engaging in criminal conduct since such actions could be intentional attempts to prevent and/or impair the administration of the DWI laws and other relevant criminal and traffic laws," the letter read. "Revealing the location of checkpoints puts those drivers, their passengers and the general public at risk."

A Google spokesperson responded to the letter with the following statement: “Safety is a top priority when developing navigation features at Google. We believe that informing drivers about upcoming speed traps allows them to be more careful and make safer decisions when they’re on the road.”

The letter is not the first communication between the NYPD and the tech giant. In 2015, the Sergeants Benevolent Association, a union of roughly 13,000 active and retired NYPD sergeants, wrote a letter to Google, demanding that the company deactivate a feature that enabled users to track police officer locations throughout the city. The first letter was sent following the shooting deaths of two Brooklyn police officers Wenjian Liu and Rafael Ramos. The Sergeants Benevolent Association believes that the officers were located by the gunman using the Waze app.

To contact the author of this article, email mdonlon@globalspec.com