A lorry driver was going down a country road. He came to a sign that read "Low Bridge Ahead". Before he realised it the bridge was directly ahead and he got stuck under it...
Cars were backed up for miles. Finally, a police car arrived. The policeman got out of his car and walked up to the lorry's cab, and said to the driver "Got stuck, eh?"
The lorry driver said "No, I was delivering this bridge and ran out of diesel..."