[notauser]

It is a problem for cycles too - at least road bikes with thin tires.

I found these figures for road bike theoretical max cornering speeds - road bike with Continental GP4000 700x213c tires, rider weight of 180 lbs., tire pressure 105lbs, clean, dry, and smooth blacktop flat surface - not cambered.

  Radius   Speed
  30 ft.   45.325mph
  20 ft.   34.569mph
  15 ft.   23.547mph
  10 ft.   18.3675mph

However I've fallen off at under 15mph when taking a bend in the rain - very big difference from 45mph!

[Coding_Cat]

Well, comparing wet-weather conditions with theoretical max cornering speeds is ludicrous, quite frankly. Of course there's a reasonable change of slippage at 25kmh on racing slicks.

It should be noted that it's also Rotterdam, the Netherlands we're talking about here. That doesn't mean that bureaucrats can't screw up, but if this type of road is unfit for bicycles they'll probably find out quick enough ;)

[masklinn]

> Well, comparing wet-weather conditions with theoretical max cornering speeds is ludicrous, quite frankly.

Depending on the exact paint (I guess since I haven't had this issue over all markings) fully painted surface can be (much) worse than wet-weather for loss of traction, and those can also get wet making any corner taken beyond walking speed a mortal danger.