Heigardian car number plates show the place where the car carrying them is registered. Whenever a person changes its main residence within the country or buys a new car, they are required to buy new number plates. Number plates are valid for a period of 5 years. Buying new plates costs around €30 plus a fee for de-registering the old plate and registering the new one. During the 5-year use of plates a once-per year tax must be payed to allow circulation.
The present format of Heigaridan number plates is used since 1994. As the most of plates in countries within the European Union, a blue strip on the left shows a shortened country code in white text (HE for Héigard = Heigard and the Flag of Europe (12 golden stars forming a circle on a blue background).
The rest of the licence plate uses black print on a white background. Just after the country code strip is a two-letter abbreviation which represents the department where the car was registered, such a CH for Charleroi. The department code is followed by a 4-digit random number, ranging from 0000 to 9999 and a letter indicating the vehicle class.
- A for particular owned vehicles.
- B for taxis and rental vehicles.
- C for trucks.
- D for private or public buses.
- E for government vehicles.
- F for any other vehicle not listed above.
Modern plates in Heigard use a typeface called FE-Schrift ("fälschungserschwerende Schrift", tamper-hindering script), also used in Germany. It is designed so that the O cannot be painted to look like a Q, and vice versa; nor can the P be painted to resemble an R, amongst other changes. This typeface can also more easily be read by optical character recognition software for automatic number plate recognition.
- The military plates use the code AH (for Armées Héigardiennes or Armadas Heigardianas) instead of the department code followed by a 5-digit number (an additional number replacing the vehicle class code). A Heigardian flag is shown instead of the EU blue strip.
- Vehicles exempt from circulation taxes (such as ambulances, tractors, agricultural trailers...) have green-painted letters instead of black.