Vehicle registration plates of Haiti

Little is known about the early history of Haitian license plates. Keith Marvin thought that the earliest plates were from the early 1930s, but older plates have since been found and at least one plate from 1923 exists. Early plates were marked with Rd'H, (République d’Haïti), HA., RH, or Haïti at various times. The Haitian coat of arms appeared on the plates from 1998 to 2002, the country flag was shown on the 2002 - 2005 plates, and since 2006 the background has shown a map of the country.
Passenger baseplates (Privé).
1956 to 1977.
In 1956, the United States, Canada and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association and the National Safety Council that standardized the size for license plates for vehicles (except those for motorcycles) at in height by in width, with standardized mounting holes. Like many other countries, Haiti appears to have followed this standard for their plates.
Multiyear plates - 1978 to Present.
Starting in 1978 Haitian plates were validated annually with stickers that showed the word "Haiti," the year of expiration, and a random serial number. Beginning circa 1998 the format of the sticker changed so that the year of expiration became the predominant feature of the sticker. 
The 2006 - 2013 issue happened more than a year later than originally planned, so these plates were not used until the beginning of 2007. Different plates were issued for each geographical region of the country. The following region names were shown at the bottom of the plate: Nord-Ouest, Nord, Nord-Est, Artibonite, Centre, Ouest, Sud-Est, Sud, and Grand Anse. Only a single plate was issued. The front plate was replaced by a windshield sticker that would break apart if someone tried to remove it. Owners of vehicles had the choice to register their vehicle where they lived or where they worked. If they moved away from where their vehicle was registered, then the vehicle would need to be re-registered. All plates had two letters followed by five numbers (AB 12345). At the same time as this new system was implemented, right-hand drive vehicles were banned from being imported into Haiti. 
The 2014 issue started 1 October 2014, and the plate backgrounds were given different colors based on the vehicle type. Known colors are pale blue for private vehicles, heavy vehicles, demonstration, and rental vehicles; pale red for dedicated to public transport and that of goods; and pale green is reserved for the diplomatic corps, consular corps, international organizations, temporary registrations, and tourist transportation. 
Location and Taxi plates.
Location plates indicate a vehicle for hire, and taxi plates are issued to traditional taxi companies. 