According to police, a truck and a TMA vehicle were involved in the accident, which occurred just before 8 a.m. on Wednesday.
There is a lot of debris on the roadway, and the road will be closed pending removal.
According to the police, several motorists have turned around on the E18 in connection with the road closure.
"Behavior like this is completely unacceptable and the risk of an accident occurring is very high," the police write on their website.
