A set of pedestrian traffic lights in Holland, which show a couple having sex whenever they turned to green, has turned the street into chaos.
Motorists crashed into each other when the lights turned to green.
Furious traffic bosses are investigating who played the prank on the lights in Nimwegen, which led to a number of rear-end shunts.
'People kept pressing the button to see the couple having sex and of course every time they did, the traffic had to stop suddenly," the Daily Telegraph quoted a police officer as telling Metro newspaper.
"We had quite a lot of rear end shunts from drivers who were too distracted,’ the officer added.
Transport officials are investigating how computer hackers managed to get into the town's traffic light system to manipulate the image, which showed the couple having sex from behind.
"We are looking at who had access and opportunity," said a spokesman.