Summer should make life easier for a business running vehicles. The mornings are brighter, the roads are usually free from ice, and nobody needs to scrape a windscreen before the first delivery.

So why should fleet managers pay particular attention to safety when the weather improves?

Because good driving conditions can create a dangerous illusion: that driving itself has become less risky.

In reality, summer brings its own challenges. More holiday traffic, unfamiliar drivers, intense sunshine, hot tyres and sudden downpours can all create problems for commercial vehicles.

There is another factor, too. When people feel more relaxed, they may become less alert to risks they would take seriously in winter.

The aim of summer fleet safety is not simply to prevent accidents. It is to keep your people working, your vehicles moving and your business operating.

For fleet managers, transport operators and business owners, a few practical changes can help reduce avoidable incidents and support a stronger insurance renewal.

Why summer can catch fleet managers out

A fleet does not operate in isolation. Your drivers share the road with holidaymakers, families towing caravans, cyclists, motorcyclists and people travelling on unfamiliar routes.

Traffic patterns also change during school holidays and bank holidays. A route that normally runs smoothly may become congested, unpredictable and difficult to schedule.

Meanwhile, the weather introduces hazards of its own.

Low sun can obscure traffic signals and pedestrians. Heat can make a vehicle uncomfortable and contribute to driver fatigue. After a long dry spell, rain can leave roads particularly slippery as water mixes with accumulated oil and road deposits.

None of these risks is especially mysterious. The problem is that they are easy to overlook when everything appears to be going well.

The solution is to make summer safety part of the routine, rather than something discussed only after an incident.

1. Check vehicles before small problems become expensive ones

A vehicle inspection is not merely another administrative task. It is an opportunity to discover a problem while it is still relatively easy to fix.

Start with tyres. Check tread depth, pressures, sidewalls and any signs of damage. Under-inflated or damaged tyres can be particularly vulnerable under heavy loads and sustained high-speed driving.

Next, check coolant and oil levels in line with the manufacturer’s guidance. Cooling systems work hard during hot weather, especially when vehicles are heavily loaded or spending long periods in traffic.

Windscreens and washer systems also deserve attention. Dirt, insects and smears can make glare much worse when the sun is low.

Finally, check ventilation and air conditioning where fitted. A driver who is uncomfortably hot may find it harder to concentrate over a long shift.

These checks should be appropriate to the vehicle and recorded consistently. If a defect is found, make sure it is dealt with before the vehicle returns to service.

A signed checklist is useful. A defect that has actually been identified and fixed is better.

2. Treat driver fatigue as an operational risk

Fatigue does not always announce itself dramatically. A driver may feel reasonably alert while their concentration and reaction times are already deteriorating.

Hot conditions, poor sleep, long journeys and stop-start traffic can all make a demanding day more difficult.

Consequently, scheduling deserves as much attention as driving technique.

Build realistic journey times into the working day, particularly during busy holiday periods. Encourage drivers to take appropriate breaks, drink water and report when they are too tired to continue safely.

Just as importantly, create a culture in which stopping because of fatigue is treated as a responsible decision, not a failure to meet a deadline.

For operators covered by drivers’ hours and working-time rules, compliance is essential. However, meeting the legal minimum should not be mistaken for proof that every journey is planned safely.

A delivery that arrives late can usually be explained. An accident caused by an unrealistic schedule can be much harder to recover from.

3. Make low sun and distraction part of driver training

Summer sunshine looks pleasant from the office window. From behind a windscreen, it can be a serious hazard.

Low morning and evening sun can temporarily obscure pedestrians, traffic signals, cyclists and vehicles braking ahead. A dirty windscreen may scatter the light and make visibility worse.

Remind drivers to keep windscreens clean, carry suitable sunglasses and leave enough distance to react safely. If visibility becomes seriously impaired, they should slow down or stop somewhere safe until conditions improve.

Distraction matters just as much.

A phone notification, an unfamiliar navigation route or a moment spent looking for something in the cab can be enough to miss a developing hazard.

Reinforce your mobile phone policy before the busy summer period. Make sure drivers know how to plan routes safely and that they must not interact with a handheld phone while driving.

The aim is not to lecture experienced drivers on obvious rules. It is to make sensible behaviour easy to follow, even when the day becomes busy.

4. Use telematics to understand what is really happening

Most fleet managers have a reasonable idea of where their vehicles go. The more useful question is how they are being driven.

Telematics and in-vehicle cameras can help identify patterns such as harsh braking, speeding and repeated risky manoeuvres. They may also provide evidence when an accident occurs.

For example, a camera recording could help clarify what happened if another vehicle suddenly brakes in front of a company van. Without reliable evidence, the circumstances may be disputed.

However, technology alone does not make a fleet safer.

The value comes from what happens next. Review the information, identify recurring problems and speak to drivers constructively. If a particular route regularly produces harsh braking, investigate whether congestion, road layout or scheduling is contributing to the issue.

Use the data to improve decisions, not simply to collect more data.

Depending on the insurer and the individual risk, evidence of effective fleet management may also be relevant when discussing insurance terms. Better driving does not guarantee a lower premium, but a documented approach to risk management gives you more to discuss at renewal.

5. Review towing, loads and vehicles that return to service

Summer often changes the way a fleet operates.

A business may take on additional work, move plant between sites, use trailers more frequently or bring a vehicle back into service after a quiet period.

Those changes can create problems if nobody reviews the arrangements.

Check that vehicles and trailers are suitable for the loads being carried. Ensure drivers have the appropriate licence entitlement and understand safe loading and towing procedures.

Vehicles returning to service should receive the necessary inspections and maintenance. Don’t assume that a vehicle is ready simply because it was working properly when it was last used.

Insurance records need attention as well. Confirm that newly acquired vehicles, changes in use and relevant driver arrangements are reflected in the policy.

An insurer cannot assess a risk accurately if the information it holds no longer describes the operation.

6. Prepare drivers for sudden summer rain

One of summer’s less obvious hazards is the first heavy shower after a prolonged dry spell.

Rain can mix with oil, rubber deposits and other material on the road, reducing grip. Surface water can also collect quickly during intense downpours.

Drivers who have spent weeks on dry roads may not immediately adjust to the change.

Remind them to reduce speed when conditions require it, increase following distances and avoid sudden braking or steering movements where possible.

Tyres and wipers should be in good condition before the weather changes. Drivers should also know how to respond if visibility deteriorates or a route becomes flooded.

No schedule is worth encouraging someone to drive through unsafe conditions.

A sensible fleet policy gives drivers clear guidance on when to continue, when to delay a journey and when to stop.

7. Turn incident reporting into a habit

Even well-managed fleets experience accidents. What matters next is how quickly the incident is reported and how effectively the business responds.

Make sure every driver knows the procedure before an accident happens.

At the scene, they should prioritise safety, contact the emergency services when appropriate, exchange the required details, collect photographs and witness information where safe, and notify the business promptly.

They should not admit liability at the scene. Instead, they should provide factual information and follow the company’s reporting procedure.

Prompt notification gives the insurer and broker a better opportunity to manage repairs, investigate liability and control associated costs.

Where camera footage is available, preserve it quickly. Recordings can be overwritten, and useful evidence may otherwise disappear.

It is worth practising the procedure with drivers rather than assuming everybody knows what to do. A simple reporting process is far more useful than a lengthy document nobody remembers.

8. What does summer safety have to do with fleet insurance?

Risk management and insurance perform different jobs.

Risk management aims to reduce the likelihood and severity of incidents. Insurance helps protect the business against specified financial losses when covered events occur.

You need both.

A fleet insurance policy should reflect the vehicles you operate, how they are used, the drivers involved and the cover required. Depending on the policy, businesses may also need to consider breakdown and recovery, vehicle replacement, motor legal expenses, goods in transit or cover for tools and equipment carried in vehicles.

These additional covers are not automatically included in every fleet policy, so check the wording and limits.

It is equally important to keep vehicle and driver information accurate. A vehicle bought mid-year or a change in use should be dealt with according to the policy requirements.

And remember: a lower claims frequency does not automatically mean an immediate premium reduction. Insurers consider several factors, including claims history, vehicle types, drivers, security and wider underwriting conditions.

Nevertheless, a well-managed fleet gives you a better foundation for discussing your risk at renewal.

9. Why your broker matters when a claim occurs

Insurance is often judged on the premium because the premium is easy to see.

The quality of support becomes much more apparent when a vehicle is damaged, a driver is injured or an important delivery cannot be completed.

At that point, the business needs clear advice about reporting the incident, the next steps and how the claim will be handled.

Cornerstone Insurance is an independent insurance broker based in Leicester. We arrange fleet insurance for businesses and support clients with policy changes, claims and renewals.

Our approach includes a dedicated account handler rather than relying solely on a call-centre experience. We can review the fleet against how it operates, help identify areas to discuss with insurers and support clients through the claims process.

That personal contact can be particularly valuable when several vehicles are involved or an incident threatens to disrupt the working day.

Cornerstone cannot promise that every claim will be accepted or that every fleet will receive a lower premium. What we can do is help you understand the cover available and make informed decisions about your insurance arrangements.

Your summer fleet safety checklist

Before the next busy period, work through these practical steps:

• Inspect vehicles: Check tyres, fluids, visibility and other items relevant to the vehicle.

• Review schedules: Allow for traffic, breaks and realistic journey times.

• Brief drivers: Cover fatigue, glare, distraction and changing weather.

• Check technology: Review telematics and camera footage where available.

• Confirm towing and loads: Make sure vehicles, drivers and equipment are suitable for the work.

• Update insurance details: Check vehicle schedules, declared use and driver arrangements.

• Rehearse accident reporting: Ensure every driver knows what to do and who to contact.

• Review claims: Look for patterns that could be addressed through training, maintenance or route planning.

You do not need a complicated new system to begin. Consistent checks, clear responsibilities and regular conversations can make a meaningful difference.

Arrange a fleet insurance review with Cornerstone

The most expensive fleet incident is not always the one that causes the most physical damage. It may be the one that removes a vehicle from service at exactly the wrong time, disrupts customer commitments and creates a chain of avoidable costs.

That is why summer fleet safety should be part of your wider business planning.

Cornerstone Insurance can review your fleet insurance arrangements and discuss whether the cover matches your vehicles, drivers and day-to-day operation.

We work with businesses across Leicester, the East Midlands and nationally. Our team offers personal support, access to a range of insurers and help with claims and policy changes.

If your fleet is approaching renewal, or you would simply like to check your current arrangements, contact us for a review.

Call Cornerstone Insurance on 0116 3440 040 or visit our fleet insurance page.

A safer fleet is not built by hoping nothing happens. It is built by making the sensible things happen consistently.