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SOM1 graphics

Which Roof Top Box Is Right for Your Driving School Car?

November 28th, 2019

So you’ve started your own driving school business – you’ve undergone driving instructor training and are ADI qualified, you’ve purchased a vehicle, secured specialist insurance and are well on your way to getting out on the road. It’s now time to get your name out there and what better way to showcase your business than on your car.

Different type of roof top boxes

There are a wide range of styles when it comes to magnetic roof top boxes. The most commonly asked question those in the trade encounter is what size and shape roof top box is suitable for my car?

If you own a saloon like a VW Passat, Kia Optima or Audi A3 or a medium hatchback like the Mazda 3, Ford Focus or VW Golf and are wanting an aerodynamic sign then go for an airflow, however bear in mind that this style is not suitable for small hatchback cars. The airflow allows for better fuel consumption as there is less wind resistance for motorway driving and allows for print on 3 sides with the ‘red L’ on the front.

The SOM1 magnetic roof top box is the most popular, standard choice and suits most cars. Choose small if driving a Ford KA, Corsa, Micra, Beetle, Fiat 500, Hyundai i10, Mini one or Citroen DS3. A medium size SOM1 or SOM2 will suit bigger vehicles.

Of course it is natural to question whether repeatedly attaching and removing the roof top box will damage the vehicle roof. Rest assured that the magnets have rubber covers to prevent any damage. Its a good idea to replace these periodically as these are liable to become brittle when exposed to the weather. These are cost effective though. The roof sign is also edged with a rim rubber for added protection.

Roof top box suitability at higher speeds

With the recent rule change allowing learner drivers to now take to the motorways we have noticed an increase in questions over roof top box suitability at higher speeds. It’s important to check whether the supplier you have chosen for your roof top box has tested their product at wind speeds that will be over 70mph. Top Notch Signs has tested their products up to 80mph. Remember that when calculating the force exerted against the roof top box, one must add the speed of a head wind to the speed that the vehicle is travelling. So a 10mph head wind and a car travelling 70mph will actually be 80mph against the roof top box.

Once you’ve decided on a size and style roof top box to suit your needs, its time to look at your customised print. Logo, phone number and name are usually displayed and can be printed in any range of colours and fonts. This is your chance to create something eye-catching and develop a brand that will set you apart from the others. It is worth considering a set of matching magnetic signs for the door panels to complete the look. If you need help with this, the team at Top Notch Signs and Graphics are happy to help with the design and layout and can do the artwork for you. Once you’ve agreed your proof your finished product will be delivered to you within 3-5 days.

Roof top box guarantees

When investing in your signage ask about print guarantees. This should be guaranteed against fading for at least 5 years.

Top Notch Signs have been making roof top boxes for the school of motoring industry and taxi companies for almost 20 years. They are also experts at all types of vehicle signage from magnetic door panels to vinyl graphics and commercial printed wraps.

Visit Top Notch Signs & Graphics website for easy, online orders from a reputable, well established UK company. Shipping nationwide including Ireland.


UK FlagMade in the UK
Nationwide Delivery
Quality Controlled Production
Safe and Secure Ordering

Why choose Top Notch Signs?


Unlike competitors, our chevron kits are FULLY ASSEMBLED


UK Quality Controlled Production


We will PRICE MATCH any comparable product


All kits are covered by our 2 YEAR WARRANTY


Order before 12pm and receive your Chevron kit the next day (weekdays only)


Our Chapter 8 vehicle chevron kits are quick and easy to apply


Options to upgrade to high intensity prismatic grade reflective red


All our vehicle chevron kits fully comply with UK Government’s Department of Transport.