The balance beam is 100 millimeters in width, corresponding to the width of garden walls, which Gardai may have to negotiate during pursuits or searches.

I feel so much safer now knowing that the Gardai get specifically tested on how to remove a car wheel from a boot. I can see it now:

Fireman: What’s the problem here?
Garda: I need to move this wheel more than 3 meters,but we didn’t get trained on that.
Fireman: You did the right thing calling us in.

More: Garda Reserve Prommotional Video.

Found via The (awesome) Chancer.

Aside: Check out the incredibly bad garda.ie, possibly the worst web site on the entire internet, and an embarrassment to the Gardai.