Shown here are the highest license plate numbers observed. The High Road is featured in each issue of PLATES Magazine.
Delaware, Indiana and Rhode Island issue numbers randomly or recycle old numbers continually, resulting in non-sequential issuance; therefore, no progressive “high.”
Alabama, Hawaii, Idaho, Mississippi, Montana, Nebraska, South Dakota and Wyoming issue plates by a county code system, so the most populous county's high is shown.
Massachusetts, Missouri and West Virginia issue plates by a month code system, so the latest month of the year issued is shown, usually December.