Liberia requires its residents to register their motor vehicles and display vehicle registration plates.[1] Nigeria, Liberia, Somalia[2] are the only three African countries that use the North American standard 6 × 12 inches (152 × 300 mm).
Private vehicles are prefixed "A" (personal), "B", and "C", probably for cargo.
The diplomatic fleet is identified by a code consisting of up to three numbers, followed by CD or CMD and another number.
| Code | Country or Organization | |
|---|---|---|
| 01 |  United States | |
| 02 |  Nigeria | |
| 03 |  Egypt | |
| 04 |  Guinea | |
| 06 |  Germany | |
| 10 |  Belgium (10CD1 Brussels Airlines) | |
| 12 | Cote d'Ivoire or Ireland | |
| 15 | ||
| 16 | ||
| 18 |  Brazil | |
| 20 |  United Kingdom | |
| 24 | ECOWAS | |
| 25 |  Sweden | |
| 26 | ECOWAS | |
| 29 | ||
| 41 | UNICEF | |
| 46 | UN Women | |
| 49 | Food and Agriculture Organization |