The New Hampshire police department has warned drivers about overloading their cars after a man was caught with a stack of furniture more than a metre high on his car.

The white car was stacked with objects including a bicycle, a television and pieces of furniture, and a white trolley hung off the back of the car.

They were tied haphazardly with rope.

A police officer stopped the car on Wednesday (June 28) morning, a post on the police department's Facebook page said.

The department posted later that day: "To elaborate on the photo that was posted earlier, driving with items attached/strapped to your vehicle can be extremely dangerous for you and those driving nearby.

"These objects can obstruct your view or even worse become unsecure and cause an accident. Please keep our roadways safe!"

Facebook users mocked the driver, but some came to his defence.

Vaughn Castora said: "Saw this coming home from Logan Airport this morning, had a ton of sh** strapped on, was laughing to myself, but it did look precariously stacked and awfully dangerous! And seeing that pic, stuff definitely had fallen off!"

Said Richard Matthews: "Yes we can have fun with the folly of stacking it, but we don't know what the real story is. They may be out of money, they may be out of hope, and all they want to do is get somewhere."

Bob Morrison joked: "Must be new parents, taking the baby out to dinner with them."