At least 15 hours
California residents applying for an original commercial Class A or B license must complete at least 15 hours of behind-the-wheel training and submit DL 1236 before issuance.
Do not confuse state hours with federal ELDT
Federal ELDT behind-the-wheel training is based on demonstrated proficiency. California separately requires the 15-hour certification for original Class A or B applicants.
Train in the intended configuration
Use the transmission, brake system, combination, passenger vehicle, and other equipment needed for the desired license without avoidable restrictions.