Regexes for all US states and Canada provinces driver licenses. Each one has their own rules.

canada-driver-license-numbers.js

// Some info based on: https://learn.microsoft.com/en-us/microsoft-365/compliance/sit-defn-canada-drivers-license-number?view=o365-worldwide

const canadaDLNumberPatterns = {
  Alberta: /\d{6}-\d{3}|\d{5,9}/,
  "British Columbia": /\d{7}/,
  Manitoba: /\w{2}-?\w{2}-?\w{2}-?\w\d{3}\w{2}/,
  "New Brunswick": /\d{5,7}/,
  "Newfoundland and Labrador": /\w\d{9}/,
  "Nova Scotia": /\w{5}-?[0123]\d[01]\d{6}/,
  Ontario: /\w\d{4}-?\d{5}\d[0156]\d[0123]\d/,
  "Prince Edward Island": /\d{5,6}/,
  Quebec: /\w\d{12}/,
  Saskatchewan: /\d{8}/,
  "Northwest Territories": /\d{6}/,
  Nunavut: /.*/,                   // I was unable to find a reliable source. Seems to be \d{5,6}
  Yukon: /\d{1,6}/,
};

us-driver-license-numbers.js

// Based on: https://ntsi.com/drivers-license-format/

const usDLNumberPatterns = {
  Alabama: /\d{1,8}/,
  Alaska: /\d{1,7}/,
  Arizona: /[\w\d]\d{8}/,
  Arkansas: /\d{4,9}/,
  California: /\w\d{7}/,
  Colorado: /\d{9}|\w\d{3,6}|\w{2}\d{2,5}/,
  Connecticut: /\d{9}/,
  Delaware: /\d{7}/,
  Florida: /\w\d{12}/,
  Georgia: /\d{7,9}/,
  Hawaii: /\w\d{8}|\d{9}/,
  Idaho: /\w{2}\d{6}\w|\d{9}/,
  Illinois: /\w\d{11,12}/,
  Indiana: /\w\d{9}|\d{10}/,
  Iowa: /\d{9}|\d{3}\w{2}\d{4}/,
  Kansas: /\w\d\w\d\w|\w\d{8}|\d{9}/,
  Kentucky: /\w\d{8,9}|\d{9}/,
  Louisiana: /\d{9}/,
  Maine: /\d{7}|\d{7}\w|\d{8}/,
  Maryland: /\w\d{12}/,
  Massachusetts: /\w\d{8}|\d{9}/,
  Michigan: /\w\d{10}|\w\d{12}/,
  Minnesota: /\w\d{12}/,
  Mississippi: /\d{9}/,
  Missouri: /\d{3}\w\d{6}|\w\d{5,9}|\w\d{6}[rR]|\d{8}\w{2}|\d{9}\w?/,
  Montana: /\w\d{8}|\d{9}|\d{13,14}/,
  Nebraska: /\w\d{6,8}/,
  Nevada: /\d{9,10}|\d{12}|[xX]\d{8}/,
  "New Hampshire": /\d{2}\w{3}\d{5}/,
  "New Jersey": /\w\d{14}/,
  "New Mexico": /\d{8,9}/,
  "New York": /\w\d{7}|\w\d{18}|\d{8,9}|\d{16}|\w{8}/,
  "North Carolina": /\d{1,12}/,
  "North Dakota": /\w{3}\d{6}|\d{9}/,
  Ohio: /\w{1}\d{4,8}|\w{2}\d{3,7}|\d{8}/,
  Oklahoma: /\w?\d{9}/,
  Oregon: /\d{9}/,
  Pennsylvania: /\d{8}/,
  "Rhode Island": /\d{7}|\w\d{6}/,
  "South Carolina": /\d{5,11}/,
  "South Dakota": /\d{6,10}|\d{12}/,
  Tennessee: /\d{7,9}/,
  Texas: /\d{7,8}/,
  Utah: /\d{4,10}/,
  Vermont: /\d{8}|\d{7}[aA]/,
  Virginia: /\w\d{8,11}|\d{9}/,
  Washington: /(?=.{12}$)\w{1,7}[\w\d]+/,
  "West Virginia": /\d{7}|\w{1,2}\d{5,6}/,
  Wisconsin: /\w\d{13}/,
  Wyoming: /\d{9,10}/,
  "District of Columbia": "d{7}|d{9}",
};

If anyone has info form a reputable source about the Northwest Territories, Nunavut and Yukon rules, I will include them. In the meanwhile, I'll try reaching out to the respective government agencies.

Yukon confirmed to be 1 to 6 digits by a government official.

NWT confirmed to be 6 digits only by a government official.

Commercial Driver Licenses.