A cement mixer got stuck under a bridge in Koblenz.
The driver misjudged the height on Monday afternoon, the police said on Tuesday.
The man had backed out again and had committed an accident.
A few hours later he reported the accident to his boss, who called the police.
According to the information, there was damage to the mixer of around 15,000 euros.
Koblenz - The amount of damage to the bridge was initially unknown.
The police initiated criminal proceedings.
dpa