Most expedite carriers use the following descripters:
A = Pickup truck or mini van capable of 500 pounds
B= Cargo Van/Sprinter capable of 2500 Pounds
C = Small dock high Straight truck capable of 5000 pounds
D = Large straight truck capable of 13,000 pounds
E = Tractor/trailer
An R suffix = reefer; CR, DR, ER would be refrigerated trucks
A C suffix would be a Canadian truck leased to a USA carrier