so I go in today to take a load from 051 to 042. Dispatcher says we didn't know placards on this haz mat trlr but we do now. He tells me what they are writes on paperwork. I look and this load was a set from 055. So basically the driver brought this set up 170 miles without the corrosive placards on the trlr. When he picked up load he should have called someone to find out what placards he needed. Not sure if this is abf not hiring quality drivers, or some driver in too big of a hurry to do it right