Cengage is committed to boosting employability, so students can land their first job in the transportation industry soon after graduation. One of the best ways to enhance student employability is through ASE certification! The ASE Certification Voucher provides students with access to the ASE Professional Level Certification Tests at a discounted price. The ASE Certification Voucher provide access to all ASE Certification tests except L1, L2, and L3 (advanced tests). Each voucher code includes one registration and one test fee.