Section 15025 Of Article 2. Compact Terms From California Vehicle Code >> Division 6. >> Chapter 6. >> Article 2.

. Except as expressly required by provisions of this compact, nothing contained herein shall be construed to affect the right of any party state to apply any of its other laws relating to licenses to drive to any person or circumstance, nor to invalidate or prevent any driver license agreement or other co-operative arrangement between a party state and a nonparty state.