Del. Code Ann. tit. 21, § 7003
(b) Presumptions. — (1) If any vehicle found to be in violation of this subchapter or any ordinance, code or regulation regulating stopping, standing or parking is unattended at the time the violation is discovered and the identity of the operator is not otherwise apparent, the person in whose name such vehicle is registered as the owner shall be held responsible for such violation, unless the owner can furnish evidence that the vehicle was, at the time of the violation, in the care, custody or control of another person. Such presumption shall be rebutted if the owner:
a. Prior to the due date furnishes to the voluntary assessment center either:
(c) Procedure for contesting. — (1) A request for a hearing must be made no later than the due date indicated on the summons, which date shall not be sooner than 20 days from the date the summons was issued.
(d) Failure to pay or contest the violation. — If the owner or operator:
the Court may, upon motion, enter a default judgment against such owner or operator. However, when the default judgment is sought for a failure to respond to the summons, no default judgment shall be entered until notice by first class mail is sent by the Court to such owner or operator providing the owner or operator with 10 days to pay the civil penalty to the Court or request a hearing to contest the charge. A default judgment may include any applicable increases in the amount of the civil penalty for failure to timely pay or contest. The applicable city, county or state agency may seek execution on any judgment entered by the Court.
In addition, the applicable city, county or state agency may tow the vehicle if it is located in its jurisdiction and levy on it for the amount of unpaid tickets plus towing charges.