Here in New Zealand we lay claim to the steepest street in the world at 1:2.86 gradient https://en.wikipedia.org/wiki/Baldwin_Street.
There's an annual charity event that involves the rolling of over 30,000 Jaffas (spherical confectionery-coated chocolate confectionery) down the hill.
How have I not heard of this event? Sounds similar to (and less dangerous than) cheese rolling.
Re:4WD vs. AWD. What's the Difference?
by Doctor_Fegg on Saturday August 27, 2016 @03:46PM
(#12373858)
There are roads in Spain with 1:4 gradient, too. 200 of the world's best cyclists rode up some of them in today's stage of the Vuelta a Espana. I'm no slouch cycling up hills but my jaw dropped seeing today's footage...
There's quite a few roads in the UK with 1:4 gradient, and one just down the road from me at 1:3 whose only restriction is no trucks and vans. Going downhill on the motorbike makes it feel like you're falling off! :)
https://en.wikipedia.org/wiki/Hardknott_Pass