Driver Knowledge Tests

How to avoid fuel contamination with diesel exhaust fluid (DEF)

Diesel exhaust fluid (DEF), commonly known by trade names such as AdBlue, is a popular way that vehicle manufacturers can achieve Euro-5 emission control standards. As use of these products has become more widespread, issues of contamination of diesel fuel

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How do DPD (diesel particulate diffuser) systems work?

DPD systems are a type of emissions control system common on newer trucks. They’re also called DPF (diesel particulate filter) systems. They are designed to remove diesel particular matter (soot) from the exhaust gas in a diesel engine. The DPD

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Vehicle safety in high winds: curtainside trucks

Strong winds can easily blow your truck over. In fact, a 100km/h gust can put as much as 30 tonnes of pressure on the side of a semitrailer. If you’re running empty or carrying a light load like cornflakes, your

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How and when to use your handbrake or parking brake in a car

With a name like parking brake, it should be obvious when you should use it, but it’s also called a handbrake, emergency brake or e-brake in various parts of the world. It’s not just as simple as understanding that you

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Lug nut and wheel nut indicators – how they work

If a wheel comes off a truck, it’s a 120kg missile that can easily kill someone and will definitely cause a lot of damage to property. The problem is that it’s difficult to tell if your wheel nuts are coming

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What’s it like to drive on the other side of the road?

How to drive on the ‘wrong’ side of the road If you learned to drive with the steering wheel on the right and driving in the left-hand lane, swapping over when you go on holiday or go and live overseas

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What should you do if you break down on the way to the airport?

You’re all excited for your holiday or you’re revved up for your business trip but fate intervenes and you are left on the side of the road with your car unresponsive and the clock ticking until final boarding call. All

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