A matatu or bus may have a licensed driver, valid insurance and the correct passenger capacity, but it must also be mechanically safe to operate.

Kenyan law requires public service vehicles to meet roadworthiness and inspection requirements designed to identify defects before they endanger passengers and other road users.

For commuters, this raises an important question: what makes a matatu or bus legally roadworthy?

For the wider regulatory framework, see Public Transport Laws in Kenya: Commuter Rights, Rules and Regulations.

Must Matatus and Buses Be Inspected?

Yes.

Public service vehicles are subject to vehicle inspection and roadworthiness requirements.

Under the NTSA PSV regulations, an operator applying for a PSV licence must provide a valid certificate of roadworthiness issued by the Authority for each vehicle being licensed.

Kenya’s Motor Vehicle Inspection Regulations, 2026 also establish inspection tests, reports and inspection stickers for motor vehicles.

A vehicle that fails the required inspection cannot simply continue operating normally without the identified defects being addressed.

What Is a Roadworthiness Certificate?

A certificate of roadworthiness indicates that the vehicle has satisfied the applicable inspection requirements.

For a PSV operator, a valid certificate of roadworthiness forms part of the documentation required when applying for the vehicle’s operating licence.

This connects mechanical safety directly with legal PSV operation.

See PSV Licensing in Kenya: Requirements for Matatus and Buses for the wider licensing requirements.

What Is the Motor Vehicle Inspection Sticker?

Under the Motor Vehicle Inspection Regulations, 2026, a vehicle that passes an inspection test is issued an inspection report and inspection sticker.

The regulations state that a person must not operate a motor vehicle on a public road unless it has a valid inspection sticker affixed to it.

A vehicle that fails inspection instead receives a defect inspection report identifying repairs that must be carried out.

What Happens If a Vehicle Fails Inspection?

Failure means defects have been identified that require attention.

The owner must have the repairs specified in the defect inspection report carried out before presenting the vehicle for re-inspection.

The 2026 regulations generally prohibit the owner from continuing to operate a vehicle that has failed its inspection, subject to limited movement allowed under the regulations for purposes connected with repairs and re-inspection.

A failed inspection is therefore not simply an advisory warning.

What Parts of a PSV Should Be Checked?

Roadworthiness involves much more than whether the engine starts.

For PSV operators, the statutory defect checklist must cover at least:

• Tyres.
• Lights.
• Safety belts.
• Brake pads.
• Windscreen wipers.
• Warning horn.

Other components may also be relevant during a formal vehicle inspection.

The objective is to ensure that defects affecting safe operation are identified and repaired.

How Often Must PSV Operators Check Their Vehicles?

The PSV regulations impose an additional operational inspection requirement.

Operators must have their licensed PSVs inspected by a qualified mechanic on a weekly basis for defects.

This is separate from simply waiting for a formal periodic inspection.

The operator must therefore maintain an ongoing system for identifying mechanical problems.

Are Long-Distance Buses Checked More Frequently?

Yes.

For a long-distance passenger service, the vehicle must be inspected by a qualified mechanic before the commencement of each journey.

The inspection checklist must cover at least tyres, lights, safety belts, brake pads, wipers and the warning horn.

This requirement is particularly important because long-distance buses can travel hundreds of kilometres during a single journey.

See Long-Distance Bus Laws in Kenya: Rules for Operators, Drivers and Passengers for the additional requirements applying to intercity services.

Must Operators Keep Records of Defects?

Yes.

PSV operators must keep records of defects identified during their required defect inspections.

They must also record the action taken to rectify those defects.

These records must be retained for at least six months.

This creates a record showing whether an operator identified mechanical problems and what was done about them.

Can a PSV Operate With Worn Tyres?

A vehicle should not be operated with tyres that make it unsafe or cause it to fail applicable inspection standards.

Tyres are specifically included in the minimum defect checklist required under the PSV regulations.

Operators therefore have an affirmative duty to inspect them rather than waiting for a tyre failure to occur.

Visible tyre damage or severe wear should be treated as a safety concern.

What About Faulty Brakes?

Brake condition is fundamental to roadworthiness.

Brake pads are expressly included in the PSV operator’s required defect inspection checklist.

A vehicle with defective braking equipment can endanger passengers, pedestrians and other motorists.

Brake problems should therefore be rectified before the vehicle is returned to normal passenger service.

Are Seat Belts Part of Roadworthiness?

Yes.

Safety belts are specifically included in the minimum PSV defect checklist.

A belt that is missing, damaged or incapable of functioning properly can therefore be a vehicle-safety defect rather than merely a passenger inconvenience.

The separate passenger and operator obligations are explained in PSV Seat Belt Laws in Kenya: Rules for Matatus, Buses and Passengers.

What About Lights and Indicators?

Vehicle lighting is another important safety component.

PSV operators must include lights in their defect inspections.

Headlights, brake lights and indicators allow the driver to see and communicate the vehicle’s movements to other road users, particularly at night or during poor visibility.

A PSV should not continue carrying passengers normally where a lighting defect makes the vehicle unsafe or puts it outside applicable legal standards.

Can Matatus Modify Their Windscreens and Windows?

There are limits.

The PSV regulations allow innovative decorations but restrict where they can be placed.

Decorations must not be painted, sprayed, drawn or affixed to passenger, driver or co-driver windows, front or rear windscreens, lights, indicators or chevrons.

Those areas must not be obscured by innovative decorations.

The rules are particularly important for maintaining driver visibility and ensuring safety equipment remains visible.

Can Matatus Add Extra Interior or Exterior Lights?

The PSV regulations restrict additional lighting.

They provide that additional exterior or interior lighting should not be affixed beyond lighting fitted by the vehicle manufacturer.

Decorative modifications therefore remain subject to road-safety requirements.

Does Overloading Affect Roadworthiness?

Overloading and roadworthiness are separate legal issues, but they can interact.

A mechanically sound vehicle can still be operated illegally if it carries passengers or loads beyond its authorised capacity.

Excessive loading can also affect vehicle handling and braking performance.

See PSV Overloading Laws in Kenya: Passenger Limits, Rules and Penalties for the passenger-capacity rules.

Can NTSA Order a PSV to Be Inspected?

NTSA has regulatory powers over PSV operation and vehicle inspection.

Under the PSV regulations, the Authority may, in addition to other penalties, order all vehicles belonging to a Sacco or company involved in specified regulatory breaches to undergo inspection where it considers this necessary.

Vehicle inspection can therefore also become an enforcement measure against an operator.

What Happens If a Defective PSV Causes an Accident?

Mechanical condition can become important in determining how an accident occurred and who may bear responsibility.

Police investigators, insurers and courts may examine issues such as vehicle maintenance, inspection records and identified defects.

That is one reason operators are required to retain records showing defects found and the corrective action taken.

Passengers involved in a crash should preserve relevant evidence and documentation as explained in PSV Accident Laws in Kenya: What Passengers Should Do After a Matatu or Bus Crash.

Can a Passenger Refuse to Travel in a Defective Matatu?

Passengers should not remain in a vehicle they reasonably believe presents an immediate safety danger simply because they have already paid a fare.

Visible problems such as severely damaged tyres, serious mechanical defects or other obvious safety hazards should be treated seriously.

Where appropriate, dangerous PSV operation can also be reported to the relevant authorities.

Roadworthiness Is an Ongoing Responsibility

Passing an inspection does not mean a PSV remains mechanically safe indefinitely.

Vehicles develop defects through ordinary use.

That is why Kenya’s PSV regulations require ongoing mechanical checks in addition to the formal inspection framework.

For ordinary licensed PSVs, operators must arrange weekly defect inspections. For long-distance passenger vehicles, the inspection must take place before each journey.

The principle is simple: a matatu or bus should be mechanically fit before passengers are placed on board.

For more Kenyan public transport regulations, start with Public Transport Laws in Kenya: Commuter Rights, Rules and Regulations or read PSV Licensing in Kenya: Requirements for Matatus and Buses.

This article provides general public information about Kenyan transport law and should not be treated as individual legal advice.