Correct answer: A. To keep the vehicle steady and prevent skidding.
Electronic Stability Control (ESC) is an active safety system which can be fitted to cars, buses, coaches and trucks. It is an extension of anti-lock brake technology, which has speed sensors and independent braking for each wheel. It aims to stabilise the vehicle and prevent skidding under all driving conditions and situations, within physical limits. It does so by identifying a critical driving situation and applying specific brake pressure on one or more wheels, as required. If necessary, the engine torque is also adjusted automatically.
This is an official-style question from the Control of Vehicle topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.
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