Kenya’s Number Plate System: Colours, Series and Penalties Explained

Number plates are one of the most visible parts of any vehicle on roads, but beyond identification, they carry far more meaning.

From private cars and motorcycles to government vehicles and diplomatic fleets, Kenya’s number plate system is structured, regulated, and packed with information. 

In Kenya, number plates are not optional; they are a legal requirement enforced under the Traffic (Registration Plates) Rules, 2016.

They are used to identify the vehicle and link the vehicle to its owner.

Without a clearly visible number plate, a vehicle is considered non-compliant. In fact, driving with a dirty, covered, or altered plate is an offence that can lead to arrest.

This is why number plates are designed to be reflective, ensuring visibility even at night.

Under the law, the number plate system is handled by the National Transport and Safety Authority (NTSA).

Also Read: NTSA Issues Guidelines for Application of Reflective Number Plates & Motor Vehicle Inspections

Kenya’s Number Plate Format

The most common number plates in Kenya follow the format LLL NNNL (L stands for a letter and N stands for a Number).

Not all number plates are the same. Kenya uses different prefixes and colours depending on the type of vehicle.

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1. Private and Commercial Vehicles

The prefix includes KA, KB, KC, and KD series, and the background is usually white with black letters on the front number plate, while the rear number plate is usually yellow.

Currently, NTSA is undertaking the replacement of the old number plates with new reflective plates that cost motorists Ksh3,050.

The new plates have enhanced security features, including an imprinted national flag, a hologram, and a watermark.

Also Read: All Requirements for Driving Cars With Foreign Number Plates in Kenya

2. Government Vehicles

Government vehicles have the prefix of GK, and this is used by national government institutions.

Other special government-related plates include: CJ – Chief Justice and  SNA / SS – Speakers of the National Assembly and Senate.

Parastatals use blue number plates with the numbers written in white.

3. County Government Vehicles

County government vehicles start with the county code, followed by a letter CG. For example, 47 CG (vehicles belonging to Nairobi County).

Also Read: Process of Transferring Vehicle on NTSA Portal and Charges Involved

4. Military Vehicles

The number plate prefix for vehicles used by the Kenya Defence Forces:

• KA – Kenya Army
• KAF – Kenya Air Force
• KN – Kenya Navy

In the current KD number plate series, KDF is designated for the military, hence not assigned for personal cars or PSVs to avoid confusion and possible misuse by motorists.

5. Diplomatic Plates

The number plates of these vehicles have a red background with white letters. The registration plates of international organisations start with the prefix KX.

Also Read: Driving With a Learner Sticker in Kenya: The Law, Your Rights & the Fine

6. Motorcycles, Tuk-Tuks, and Special Vehicles

Different prefixes apply depending on the vehicle:

• KM – Motorcycles
• KTW – Tuk-tuks
• KTC – Tractors
• KHM – Heavy machinery
• Z – Trailers

• KD – Vehicle dealers
• KG – Garage vehicles
• KT – Tow trucks
• KC – Container freight stations

In 2026, the government introduced new number plates for electric vehicles. Both the rear and front plates are white with the letters and numbers written in green. The move aims to promote EV adoption and offer incentives such as priority parking.

Also Read: How to Transition From Red Driving License to NTSA's Smart Driving License and Charges Involved

Rules and Penalties on Number Plates

Kenyan law outlines strict rules for number plates:

1. Plates must be clearly visible and legible
2. No modifications are allowed
3. Plates must match the vehicle’s official registration
4. Both front and rear plates must be installed

Failure to comply can result in Ksh20,000 fine or imprisonment of up to six months.