The CLP exam is broken into three portions: general knowledge, air brakes and combination vehicles. You must pass a written exam to receive a CLP.Īre you worried about passing the permit test? Follow these tips if you’re not sure what to expect or what to study for the CLP exam. The CLP lets you legally practice driving under a CDL instructor’s supervision.ĭrivers must obtain a permit in their home state before attending the Prime Training Program. Before you can earn your Class A Commercial Driver’s License (CDL), you must obtain your Commercial Learner’s Permit (CLP). Your career in trucking starts with a learner’s permit.