The development of the car, associated road networks, the railways and better and more efficient aircraft offering greater comfort and safety all contributed to the better use of increasing leisure time and greater demand for tourism. However it is not only the frequency and speed of transport that is important but also the cost of it and the other related components of tourism(accommodation and support facilities). Thus prices, frequency, speed and efficiency of transport all play a part. The faster the mode of travel and the lower the prices the more is demand stimulated. More people with limited discretionary incomes or those with limited time for travel, can indulge in tourism, domestic and intemational.
【正确答案】：汽车(以及相应的公路网络)的发展、火车和快速方便的飞机，给人们出行带来了舒适和安全，促进人们更好地利用越来越多的余暇时间，同时也刺激了人们的旅游需求。当然交通工具的速度和便利固然很重要，交通费用以及其它相关旅游因素(住宿和其它辅助设施)也不容忽视。交通的价格、便利、速度和效率都会影响对旅游的需求。交通速度越快，价格越低，旅游要求就越强烈，就会有更多的可随意支配收入少或旅行时间有限的人来参加国际旅游和国内旅游。
