Your insurance company may be able to provide you with your driver’s license number. On your Driver’s License, Photo ID, Learner’s Permit, and most PennDOT correspondence, your eight (8) digit Driver’s License or Photo ID number can be found. On a driver’s license, what is the number of the license? (Deciliter, tablespoon, teaspoon, and milliliter are displayed from left to right.) All are metric, with exactly 15 ml for the tablespoon and exactly 5 ml for the teaspoon.)ġ00 ml deciliter (dl). What exactly does DL mean when it comes to measurement? In recipes, Sweden uses the standard set of volume measures. It appears in field 5 of your paper license, as well as field 4d of your new plastic card license or permit. On a driver’s license, what is 4d? Your driver’s license number is a 9-digit number that stays with you throughout your driving history. The document discriminator is in field 5. What does 4d mean on a license, in this sense? A: The driver license number (also known as a customer identifier) is entered in field 4d. The DD is a security code that indicates where and when the license was issued.Īs a result, each card is uniquely identified for a specific individual. Several years ago, a number of states began adding this piece of data to their driver’s licenses. Document Discriminator (DD) is a abbreviation for Document Discrimination.