Originally Posted by
zizou
Regards the Air Attack Shield - i've increasingly noticed commissaires telling riders to remove the visor before racing (in a mass start). I think it is due to it being held on by magnets rather than fixed on. This isnt a total ban though as on other nights ive still seen riders wearing them, i guess it just depends what official is in charge on the night!
USAC cycling rule:
2B13.
Riders may carry no object on them or on their bicycles that could fall onto the track. Any electronic device with a display (speedometer, power meter, etc) must be hidden such that the riders cannot read it while riding.
The visor likely is getting caught in the first clause, but then sunglasses, chain ring bolts and riders are all known to fall on the track too.