Motorists have been driving down the wrong way of the M5 to avoid queues following several road accidents on Saturday.
Authorities released pictures showing a number of drivers operating their vehicles recklessly.
This included a lorry driver blocking the road after doing a u-turn and motorists trying to access routes that had been closed.
Highways England spotted traffic driving the wrong way into Avonmouth after a collision northbound between J18 and J17.
It tweeted a picture of the offending driver along with the caption: "This is illegal. You are putting yourselves, our roadworkers and other road users at great risk."
Highways England also posted an image of a lorry driver blocking both directions as he attempted a u-turn, adding: "There is alot of congestion on the #M5 today due to multiple serious incidents.
"This does not however provide anyone with the ability or excuse to go through roadwork closures, or go down the road the wrong way."
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It was also unhappy with drivers trying to access other closed roads by driving around cones, writing: "This action is ILLEGAL!”
An earlier crash between junctions 22 and 23 had also caused traffic to build up.