New Jersey Statutes Title 39. Motor Vehicles and Traffic Regulation 39 § 5-30.14

The proposed notice of suspension, revocation, or postponement shall be mailed to the person at his last address of record with the Division of Motor Vehicles. The suspension, revocation, or postponement shall become effective 20 days from the date of mailing of the notice, unless the director establishes another date for the commencement, or the person notifies the director in writing within 15 days of the mailing of the notice of his intention to challenge the suspension, revocation, or postponement. A hearing request shall contain a detailed statement of the factual and legal basis upon which the person challenges the suspension.