Multiple choice Which of the following is not a method of conserving petroleum? Correct pressure levels in the tyres while driving a petrol vehicle Driving at high speed and reaching the destination faster Using public transport Switching off engines at traffic junctions Timely servicing of vehicles Reveal answer Fill a bubble to check yourself B Correct answer Explanation Yes, it is the correct answer. Fuel consumption increases significantly over 90 km/h. At 110 km/h, a car uses up to 25 per cent more fuel than it would consume at 90 km/h.