I guess I confused the issue with GMRS. The radio I'm talking about is a Dual-Band Two-Way Ham Radio Transceiver UHF/VHF 136-174/400-520MHz.
I understand that GMRS covers 462 to 467 Mhz, which is regulated by the FCC and requires a license and I see nothing about commercial use. The FMS also has frequencies in this range and a license is not required if the preset freq's FMS channels are used.
On the other hand, 136-174 Mhz also requires no license and truckers shouldn't have any issues using the particular channels in the freq range provided they are approved channels.