This paper develops an economic model of driver behaviour and discusses the traffic safety implications when the driver listens to the radio, uses a mobile phone, and has passengers in the car. The main findings are that, even though engaging in the three distractions reduce the driver's concentration and his driving performance, they can improve the traffic safety situation for both himself and the passengers. By reasoning a little beyond the pure results of the model the paper also suggests that having access to the radio and a mobile phone can improve safety due to the driver being able to receive information about driving conditions and inform people about lateness. The safety implications of having passengers in the car will also depend on how much the driver is attached to the passengers; the more concerned he is about their safety, the more careful he becomes.

本文建立了驾驶员行为的经济模型，并讨论了驾驶员收听广播，使用手机以及有乘客上车时的交通安全隐患。主要发现是，即使进行这三种干扰都会降低驾驶员的注意力和驾驶性能，但它们可以改善他本人和乘客的交通安全状况。通过超出模型的纯粹结果来推理，该论文还建议使用收音机和移动电话可以提高安全性，因为驾驶员能够接收有关驾驶条件的信息并告知人们迟到的情况。让乘客上车的安全隐患还取决于驾驶员对乘客的依附程度。他越担心他们的安全，