PSNI officers have released an image on social media of the aftermath of a serious road traffic collision in Lisburn.
The picture, being used with permission from the driver, shows a piece of wooden fencing has broken, gone through a window and straight through the driver's headrest.
PSNI Lisburn commander Chief Inspector John Wilson said: "A full investigation has been launched to determine the cause of this accident, but this picture shows that the driver of this vehicle was just inches away from a serious head injury."
The driver is in hospital suffering from a number of injuries, including suspected broken ribs.
The PSNI say he gave them permission to use the picture so they could show just how shocking it was.
Lisburn police have released an image of the aftermath of a serious road traffic collision. http://t.co/x0GfRbN8CQ pic.twitter.com/zOam6F0GwB
— PSNI (@PoliceServiceNI) November 21, 2014
Chief Inspector Wilson added: "Look carefully at this photograph. Understand the reality of this situation. Drive safely, and do all you can to avoid being in the same situation. This driver was incredibly lucky not to sustain much more serious injuries."
"It's winter, so darkness comes earlier and lasts longer. Pedestrians should wear brighter clothing. Cyclists should also wear reflective arm bands and jackets and a helmet. Motorists should turn on their lights as soon as light begins to fade," he added.
Across Northern Ireland to date this year, 73 people have been killed on the roads - 16 more than the total number of people killed during all of 2013.