Staffordshire Police caught the driver and took to Twitter to warn others about speeding.
Staffs Police Road Policing Unit tweeted saying: "Not all police vehicles are adorned with high vis battenburg!
"As this driver found out on the M6 in the Stafford police area.
"Driver was reported for doing 90 in a 50 through road works.
"Speed restrictions are there to protect you and road workers. Please adhere to 50."