Wrong (This week's Photo Hunt theme)

Surely there's something wrong with that sign? Put it another way: I'm far more willing to believe that something got lot in translation with regards to its English portion than that pedestrians and mountain bikes (the latter especially when just by themselves -- that is, sans riders) are really that scary, be it on a hiking trail or not! ;b
(Also, no, there's nothing wrong but yes, this week,
Link to full article