Beware flying motorbikes - and other road signage

[A G Wood]

There are a few of these  locally. I understand what the message is:  'This can be a dangerous piece of road to ride a motorcycle on...with the subtext: particularly if you are 40+ year old  manchild vainly trying to relive your teenage years on a recently purchased sport bike/H-D cruiser which you don't have the experience to ride safely ', but the grammar is so contorted it just reads weird...