A road safety message from Sunshine 106.8.
Here's a simple bit of physics that's worth carrying around with you every time you get behind the wheel: doubling your speed doesn't just double your stopping distance. It roughly quadruples it. Go twice as fast, and by the time you've reacted and braked, you'll have travelled about four times as far before you stop. It's one of those facts that's easy to nod along to and still not really feel, because most of us don't experience road safety as physics — we experience it as a normal drive that always seems to work out fine. And for the vast, vast majority of journeys, it does. But stopping distance is exactly the kind of thing that only matters on the one day it matters, and by then, it's too late to relearn it.
Think about the roads you drive most often — a route to work, the road outside your own house, the school run. On a dry road at 50 kilometres an hour, a car needs roughly 13 metres to stop after the driver reacts. At 60, that jumps to around 18 metres. It might not sound like a huge difference, until you picture a child, or a cyclist, standing exactly where those extra 5 metres would have made all the difference.
Wet roads, worn tyres, and a driver who's distracted or tired all make stopping distances longer again, sometimes much longer. So the margin you think you have is often smaller than you assume.
The practical takeaway is straightforward: leave yourself room. A little more space to the car in front, a little less speed on a road you don't know well, a little more caution in the wet. It costs you almost nothing in journey time, and it's exactly the kind of margin that keeps a near-miss a near-miss, rather than something much worse. Most drivers never consciously think about stopping distance from one year to the next, which is exactly why it's worth deliberately reminding yourself of it now and again, before it becomes the difference that matters.
A road safety message from Sunshine 106.8, funded by the news reporting scheme.