You may drive in Hawaii with a valid driver’s license issued by another state if you are 18 years of age or older. If you wish to transfer your out of state driver’s license to a Hawaii Driver License, you must comply with the following:
Sign a notification letter, addressed to the administrator of the out of state driver license bureau, stating you are applying for a Hawaii Driver's License and you have voluntarily surrendered your out of state driver's license. Upon complying and after payment of the fee Kauai County Fee Chart(DOCX, 22KB). you will be issued a Hawaii Driver's License.