Tauranga residents are being warned to think about the consequences of broadcasting information about police checkpoints on social media.
The warning comes as people set up Facebook pages detailing the locations of police checkpoints and hidden speed camera locations.
A page called Checkpoint Watch New Zealand has gained more than 23,000 "likes" and urges people to: "Let us know or find out where they are operating so that they can be avoided."
A local version of the page called Tauranga Checkpoint Watch is also active, but has not posted any checkpoint locations.
Another Tauranga-based page called Tauranga Cop Stops has been active since June and has attracted more than 560 likes. It regularly posts about where police checkpoints and crash sites are.