You are on a fast, open road in good conditions. For safety, the distance between you and the vehicle in front should be

حدد اجابة واحدة
two car lengths
طول سيارتين
one car length
طول سيارة
2 metres (6 feet 6 inches)
٢ مترا ٦ أقدام
a two-second time gap
مسافة ثانيتين