Some of the absurdities around the Dublin area (I'm sure it'll appply elsewhere also) is the sight of a dual carriageway of good standard, having it's 40mph limit brought down to 38.5 mph when related to the 'closest' Km/hr round-off. Surely in this day they could have rounded upwards if the road merited it.
I speak in particular of the N4 at Liffey Valley and N11 at stillorgan if you know them.
My guess is in 20 yrs or so they'll changeover the side of the road we drive on as well...Oh boy I can't wait.