Del. Code tit. 21, § 2812

Nothing in this chapter shall be construed as amending, modifying or repealing any existing law of this State or any existing ordinance of any political subdivision relating to the operation of motor vehicles, the licensing of persons to operate motor vehicles or providing penalties for the violation thereof or shall be construed so as to preclude the exercise of the regulatory powers of any division, agency, department or political subdivision of this State having the statutory authority to regulate such operation and licensing.