You have to pass the hazardous materials knowledge test at a DMV office within 2 years before your renewal and pay a fee of $5 for the test. Residents of the following counties must pay a supplemental Metropolitan Commuter Transportation District (MCTD) fee : Bronx, Kings Brooklyn, New York Manhattan, Queens, Richmond Staten Island; Dutchess, Nassau, Orange, Putnam, Rockland, Suffolk and Westchester. The MCTD fee is $1.00 for every 6 months the permit or driver license will be in effect.
Where can I renew?
At the DMV office. You must come to a DMV office to renew a commercial driver license (CDL) or commercial license permit (CLP). And you must to complete a guide to make sure you have the proofs of identification you need before coming
And what when I have the proofs?