Delaware Code Title 21. Motor Vehicles § 2131. Effect and duration of temporary registration plates;  destruction upon expiration;  use of temporary tag system

(a)(1) A temporary registration plate properly issued to an owner or purchaser of a vehicle in accordance with § 2129 or § 2130 of this title shall be valid and shall entitle said owner or purchaser to operate the vehicle for which issued upon the public highways for a period of 90 days from the date of issuance or until the issuance of a permanent registration plate or until the cancellation or rescission of the contract of purchase, whichever occurs first.

(2) A temporary registration plate properly issued by a certified repair technician to a customer's expired vehicle for the purpose of verifying repairs in accordance with § 2129 or § 2130 of this title shall be valid and shall entitle said certified repair technician to operate the vehicle for which issued upon the public highways for a period of not more than 60 days from the date of issuance.