Bus Driver Heat Safety: The Question Is Now With the Minister

By Lee Odams
Bus driver, transport safety campaigner and RMT lay representative
Writing in a personal capacity

Disclaimer:
This article is written in a personal capacity. The views expressed are my own and do not necessarily represent the official position of RMT, my employer, or any other organisation unless explicitly stated.

---

There are moments in any campaign when an issue moves from being seen as an individual complaint to something much wider.

The issue of excessive heat in bus driver cabs has now reached that point.

For too long, bus drivers have raised concerns about dangerously hot cab conditions during periods of extreme weather, only for the issue to be treated as if it is simply about comfort.

It is not.

This is about driver welfare, passenger safety and wider public safety.

Bus drivers are operating large public service vehicles, often through busy urban environments, in enclosed cab spaces that can become extremely hot during heatwaves. Many drivers have reported cab temperatures exceeding 40°C, defective or ineffective air-conditioning systems, hot steering wheels and dashboards, dehydration, headaches, fatigue, nausea and difficulty maintaining concentration.

Those are not minor concerns.

A professional driver suffering from heat stress, dehydration or fatigue is not just uncomfortable. Their reaction times, alertness and decision-making may be affected. In a safety-critical role, that matters.

This is why I believe bus driver heat safety now needs national attention.

A gap in the current framework

Following previous correspondence with the Health and Safety Executive, it has become clear that heat is recognised as a workplace hazard under existing health and safety duties. However, the current national framework does not appear to properly address the specific realities of transport workers operating in vehicle cab environments.

Workplace temperature guidance was not written specifically for bus cabs.

There is no legal maximum bus cab temperature.

There does not appear to be a dedicated national bus driver heat safety framework.

There is no nationally enforceable cooling standard for driver cabs.

There is no clear national operational rule stating what should happen when cab cooling systems are defective during hot weather.

In my view, that leaves a significant gap.

Bus driving is not an ordinary office-based role. It is a safety-critical driving job involving responsibility for passengers, pedestrians, cyclists, other road users and the driver themselves.

The law may recognise heat as a workplace hazard in broad terms, but broad recognition is not enough if the practical reality inside a bus cab is not being properly addressed.

The matter has now been raised with the Minister

I am grateful that my MP, Michael Payne, Member of Parliament for Gedling, has now written to Simon Lightwood MP, Minister for Roads and Buses, raising this issue directly.

The letter asks the Department for Transport to review the matter and clarify its current position.

In particular, it asks whether excessive cab temperatures are being considered as part of national transport safety policy, whether any work is underway to develop guidance or standards, and whether there are plans for further engagement with relevant bodies such as the HSE, DVSA and industry stakeholders.

That is exactly the sort of national conversation that is now needed.

This should not be left to individual drivers, individual depots, individual operators or individual local transport authorities to interpret differently.

The bus industry needs clarity.

Drivers need clarity.

Passengers deserve clarity.

Transport for London has already gone further

One of the most important developments in this debate is the position taken by Transport for London.

TfL has publicly indicated that buses with defective cab cooling systems should not enter service, and that drivers who do not feel they can carry out their duties safely due to cooling failures should contact control and be supported.

That matters.

It matters because it recognises that excessive heat and defective cooling systems are not just comfort issues. They can affect safe operation.

The question now is simple:

If this is recognised in London, why is there no consistent national position across the rest of the country?

Drivers outside London are not less affected by heat.

Passengers outside London are not less deserving of safe services.

Operators outside London should not be left without clear national expectations.

This is not about refusing to work

It is important to be clear about what this campaign is — and what it is not.

This is not about encouraging drivers to refuse work unnecessarily.

It is not about creating disruption.

It is not about attacking individual managers, operators or engineering teams.

It is about ensuring that professional drivers are not expected to operate passenger vehicles in conditions that may place their health, concentration, judgement and safety at risk.

It is also about ensuring that drivers who raise genuine heat-related safety concerns are supported, not pressured or disciplined.

If a driver is dizzy, dehydrated, nauseous or struggling to concentrate because of extreme cab heat, that is not a normal working condition. It is a safety concern.

If a cab cooling system is defective during a heatwave, that should not be brushed aside as an inconvenience.

If a vehicle is being used in conditions where the driver’s ability to operate safely may be impaired, that should be treated seriously.

Climate change makes this unavoidable

This issue is not going away.

The UK is experiencing more frequent and more intense periods of extreme heat. The bus industry cannot treat each summer as a surprise.

Heat risk needs to be planned for.

That means proper maintenance of cab cooling systems.

It means clear defect reporting procedures.

It means heatwave operational plans.

It means access to drinking water and welfare facilities.

It means proper risk assessments that reflect the reality of enclosed vehicle cabs.

It means clear support for drivers who raise concerns.

It means national guidance that recognises bus driving as a safety-critical transport role.

What is needed now

In my view, the Department for Transport, HSE, DVSA, Traffic Commissioners, transport authorities, operators, trade unions, occupational health experts and professional drivers should now be brought together to look at this issue properly.

The questions that need answering include:

• Should there be a national bus cab heat safety standard?
• Should defective cab cooling systems prevent vehicles from entering service during heatwaves?
• Should there be clearer DVSA or DfT guidance on excessive cab temperatures?
• Should operators be required to have heatwave operational procedures?
• Should drivers raising heat-related safety concerns receive specific protection and support?
• Should bus cab temperature monitoring become part of wider safety management?
• How should climate change be reflected in future bus design, procurement and regulation?

These are serious questions for a serious industry.

A safety issue hiding in plain sight

Bus drivers have known about this problem for years.

Every summer, the same concerns return. Hot cabs. Failed air conditioning. Drivers feeling unwell. Passengers complaining. Vehicles remaining in service. Managers and controllers trying to keep services moving. Drivers trying to do the right thing while also protecting their licence, job and passengers.

But the reality is that goodwill and endurance are not a safety framework.

Drivers should not be expected to simply cope.

The industry should not rely on individuals pushing through dangerous conditions.

The public should not have to wait for a serious incident before this issue is taken seriously.

The question is now national

The fact this issue has now been raised with the Minister for Roads and Buses is important.

It does not mean the problem is solved.

It does not mean action will automatically follow.

But it does mean the question is now on the table:

Is the current national framework sufficient to protect bus drivers, passengers and the public from the risks of excessive heat in bus cabs?

In my view, the answer is no.

The next step is for government, regulators and the industry to acknowledge the gap and begin closing it.

Bus drivers deserve safe working conditions.

Passengers deserve safe services.

And as extreme heat becomes more common, the UK bus industry needs a national heat safety framework fit for the climate we are now living in.

---

About the author

Lee Odams is a bus driver based in Nottingham with over 19 years of operational experience in the UK bus industry. He writes about bus safety, driver welfare, public transport policy, transport governance and Freedom of Information research.

He is a transport safety campaigner and RMT lay representative. Unless explicitly stated otherwise, his blog articles, social media posts and public commentary are written in a personal capacity and do not represent the official position of RMT, his employer, or any other organisation.

Bus driver heat safety
Bus safety
Driver welfare
Public transport safety
Bus cab temperatures
Heat stress
Transport policy
Department for Transport
HSE
DVSA
Traffic Commissioners
Climate change
Passenger safety
Public transport
UK bus industry
Freedom of Information
Transport governance