I’m not fully sure the circumstances this sign is elucidating, but I can tell you I won’t be riding my bike here, that’s for sure.
i'm a cyclist, and i find these signs to be utterly hilarious
even though i have ridden over train tracks in extremely snowy weather and gone down like a sack of bricks
(i know this sign is about getting your wheel caught, not slippery when wet, just sayin i've busted my ass on tracks before) -- still hilarious

