What I've done is continue my membership in OOIDA, submitted comments to FMCSA when able [as Moose pointed out, the lack of truck parking near sites selected for public comment pretty much leaves actual truck drivers out of the conversation, unless we can afford to park elsewhere and taxi to the location. Which isn't very likely in Washington DC.]
I've also tried to make the point whenever possible that the 2003 change of HOS has proven to have some unintended consequences that need addressed. Like making it virtually impossible for solo drivers to earn a living legally: without the ability to accommodate detention at the shipper by using the split sleeper to bump the 14 hr wall, we often can [or may] not make delivery within the 14 hour period.
The obvious solution is to force shippers [and consignees] to clean up their acts and stop detaining trucks at their docks for extended periods due to their lack of sufficient material, equipment, & personnel. Instead, the 'quick fix' is to require team driven trucks, and if it forces solo drivers and O/Os out of business, oh well, that's life in the big city, eh?
If there's a way to force FMCSA to address the problems with solutions that work for everyone, I haven't seen it yet, because we have told them over & over for years now, but THEY DON'T LISTEN TO US. Nor are they required to use fact, reason, or even common sense when creating regulations, and there's little we can do about it, because we lack the resources [meaning money] to force them to address our complaints.