On tuesday last, Ireland witnessed one of the worst traffic accidents in our history. It’s been covered plenty on breakingnews.ie so I’m not going to go into details here, my sympathy goes out to all those involved and their families and friends. This was a truly terrible accident, myself and Elly passed the scene about 10 minutes before it happened. I hope you’ll forgive me for feeling relieved that we weren’t involved.

Something positive has to come from a tragedy like this and I hope it’s helped others to think about the way they drive, the way it has made me think about how I drive. The question that comes to my mind is “so, how fast should you drive in fog?”

Tonight, I did some calculations and worked/puzzled this out. At 120Kph you move a little bit more than 33 meters every second. That’s obviously far to fast to be travelling if you can only see 20m or 25m and thats still only a light fog. If you come up to a stationary object it’s already too late to brake.

So what speed is safe?

Lets say you can see 20m. That’s about 65 feet. What distance can you stop your car in, from what speed? is 70Kph slow enough? Well, you travel about 19.5m in 1 sec. Could you react and stop your car in 1 sec? I know I don’t want to find out.

Even at half that speed you only have 2 secs to react and avoid something thats happened 65 feet ahead. Think about that next time you start your car, I know I will.

Lets make that the positive thing that comes from this, think about how you drive. Not just the speed, your road manners as well. Indicate when you’re going to make a turn or change lane not as you do it. Don’t stay in the overtaking lane if you’re not overtaking and leave earlier so you’re not in a hurry. :) and maybe we’ll all help make our roads safer for us all.