Daily Q's D2W2 Flashcards
What is a skid?
When one tyre or more looses normal grip on the road; causing an involuntary movement of the vehicle.
What are the four most common causes of skids?
Excessive Speed - Excessive Braking - Harsh Acceleration - Coarse Steering.
What is the primary purposes of ABS?
Allows the driver to maintain steering control when braking harshly in an emergency situation.
How do you establish that ABS has intervened and does it reduce the braking distance of the vehicle?
You feel a ‘juddery’ brake pedal, the ABS indicator may illuminate. It may not reduce the braking distance of the vehicle.
What is traction control?
Controls excessive wheel-spin on individual wheels.
What causes an aquaplaning situation?
Where a wedge of water builds up, usually at the front of the front wheels.
How do you correct aquaplaning?
Reduce your speed.
What is the difference between ‘Passive’ and ‘Active’ safety systems?
Passive systems lay dormant until an accident occurs, where as active systems engage with the driver to prevent an accident.
List five ‘Passive’ safety systems?
Airbags, Crumple Zones, Head Restraints, Seatbelt Tensioners & Safety Cage.
What is meant by the terms ‘Oversteer’ and ‘Understeer’?
Oversteer - the rear of the vehicle steps out.
Understeer - the vehicle runs wide of its intended course.
At any given speed, the vehicles’ overall stopping distances have two components. What are they?
Thinking Time & Braking Time
What is happening if, whilst driving, an active safety systems activates?
You may not be driving in the safe limits of the vehicle or road conditions.
What senses can you use to establish if you are on an icy road surface?
Vision - see a shiny road surface, Sound - less or no noise will come from the road surface, Feel - little vibrations will be coming through the steering wheel.
Are you permitted to use fog lights when visibility is not reduced?
No
State two of the eight points of the fog code?
- Allow more time for the journey, Use lights if visibility is less than 100 meters, do not closely follow tail lights of the vehicle in front of you.
