Making the traffic environment safer may be a more important consideration in low- and middle-income countries, where many of the poor never drive vehicles but are still at considerable risk of being hit by them.
使得交通环境变得更为安全可能是低中收入国家更重要的考虑因素，在那些国家里，穷人从来没有开过车子，但却有相当大的机会被汽车撞上。