TOWSON, Md. (WJZ)—Baltimore County’s plan to activate four new speed cameras on Thursday hit a speed bump.

You’ll see signs that say “Photo Enforced” and concrete pads have been poured, but no cameras have been installed.

A police spokesperson tells WJZ the vendor caught them by surprise.

“They were scheduled to go into operation today. However, because of a technical or mechanical problem on the vendor’s end, the installation of the camera itself has been delayed. We expect them to be operational very soon, and we’ll be letting the public know as soon as they’re installed so that people know that the cameras are there and that the 30-day grace period has begun,” said Elise Armacost, Baltimore County Public Safety.

Those cameras will be installed at Loch Raven Academy on Goucher Boulevard; Seven Oaks Elementary in Perry Hall; Bais Yaakov in Owings Mills, and Winands Elementary in Randallstown.