Hmmmm I could have sworn that I posted on this earlier.....
WE had a driver that had very thick curls down to well below the shoulders. Wore it under the cap while he was on the clock by aggreement. Did it that way for about 18 months and then cut it off. It was a real pain and hottern heck during the summer. Never went to the panel, as far as I know.
THe panel WILL enforce the dress and appearance codes.