Linkage

http://www.heavydutytrucking.com/2005/06/012a0506.asp

Also the FMCSA website has links to the comments posted by various participants
http://www.fmcsa.dot.gov/rules-regulations/administration/rulemakings/rules2005.htm

I read with interest the comments of (in no particular order)
American Trucking Associations
Advocates for Highway and Auto Safety
Truckload Carriers Association
NIOSH
Public Citizen
Yellow/Roadway
Schneider National
CVSA (Commercial Vehicle Safety Alliance)

Those are some I recall as having useful information