Stratman
MB Enthusiast
Ignore smart motorway lane closures and it'll cost you £100 and three points.
It is already illegal to drive in a lane marked with a red X, but police officers previously had to catch drivers in the act.
Under new Home Office legislation, police will be given the power to penalise drivers captured on traffic cameras ignoring the signs.
In addition to a fine, offenders will be given three penalty points.
Highways England said more than 180,000 warning letters had been sent out since December 2016.
It said the new laws were due to come into force in "late summer".