A Kentucky CDL with only an N endorsement authorizes a driver to transport placarded hazardous material in a qualifying tank vehicle.
Correct answer: B – False
Federal CDL rules require endorsements for both tank vehicles and commercial vehicles used to transport regulated hazardous materials. An N endorsement covers the tank-vehicle qualification only. When both qualifications apply, Kentucky identifies the combined endorsement as X; an N endorsement alone is not sufficient.
Source: Kentucky Commercial Driver’s License Manual — § 2.23.3, “Lists of Regulated Products”; § 8, “Tank Vehicles”, 49 CFR § 383.93(b)–(c) – Endorsements, KRS § 281A.170(3)(b) – Form of licenses -- Use for federal identification purposes -- Limitations on licenses -- Administrative regulations -- Expiration

