单项选择题

Motorways are, no doubt, the safest roads in the country. Mile for mile, vehicle for vehicle, you are much less likely to be killed or seriously injured than on an ordinary road. On the other hand, if you do have a serious accident on a motorway, fatalities are much more likely to occur than in a comparable accident elsewhere on the roads.
Motorways have no sharp bends, no roundabouts or traffic lights and thus speeds are much greater than on other roads. Though the 70 m.p.h, limit is still enforced, it is often treated with the contempt that most drivers have for the 30 m.p.h limit applying in built-up areas in Britain. Added to this is the fact that motorway drivers seem to like traveling in convoys with perhaps barely ten meters between each vehicle. The resulting horrific pileups (involving maybe a hundred vehicles) when one vehicle stops for some reason-mechanical failure, driver error and so on-have become all too familiar through pictures in newspapers or on television. How many of these drivers realize that it takes a car about one hundred meters to brake to a stop from 70 m.p.h. Drivers also seem to think that motorway driving gives them complete immunity from the caprices of the weather. However wet the road, whatever the visibility in mist or fog, they plough at ludicrous speeds oblivious of police warning or speed restrictions until their journey comes to a premature conclusion.
Perhaps one remedy for this motorway madness would be better driver education. At present, learner drivers are barred from motorways and are thus, as far as this kind of driving is concerned, thrown in at the deep end. However, much more efficient policing is required, for it is the duty of the police not only to enforce the law but also to protect the general public from its own folly.

Which of the following is one probable solution to motorway madness suggested by the author（）

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