A police operation’s thwarting attempts to steal fuel from vehicles parking on laybys in Northamptonshire.
The northern end of the A14 has been targeted.
A range of measures have been put in place to protect vehicles and detect any suspicious activity.
Earlier this month a teenage boy was arrested after a HGV driver alerted police to an attempted theft.
The force has also worked with Highways England to cut grass and vegetation alongside the road – to make it harder for suspects to hide their activity.