Del. Code Ann. tit. 21, § 2949
(a) The nonresident owner of a motor vehicle not registered in this State may give proof of financial responsibility by filing with the Secretary a written certificate or certificate of an insurance carrier authorized to transact business in the state in which the motor vehicle or motor vehicles described in such certificate is registered, or, if such nonresident does not own a motor vehicle, then in the state in which the insured resides, provided such certificate otherwise conforms to this chapter, and the Secretary shall accept the same upon condition that said insurance carrier complies with the following provisions with respect to the policies so certified:
Code 1935, § 5712J; 48 Del. Laws, c. 359, § 2; 21 Del. C. 1953, § 2949; 57 Del. Laws, c. 670, § 12A