In some citites and towns all over the world ,the high volume of traffic is a problem.what are the causes of this and what actions can be taken to solve this problem.
Many citites around the world are facing severe traffic congestion problems. what are the main causes for this issue and what solutions can be implementedt to solve it ?
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The table shows data about underground railway systems in six major citites with date opened, kilometres of route and passenger numbers per year in millions Summarise the information by selecting and reporting the main features, making comparison where relevant.