In Kenya, trailer number plates are distinctively marked with the letter 'Z' as a deliberate system to identify them as separate legal entities from the trucks towing them.

• Trailer plates prefix with 'Z' and feature black text on a yellow reflective background, distinguishing them from regular vehicle plates.
• This system, mandated by the Traffic Act, ensures each trailer has its own independent registration, logbook, ownership, and insurance.
• This practice is not unique to Kenya; other countries like South Africa, Zimbabwe, and Tanzania also use specific codes or series to identify trailers.