In one series of studies, researchers instructed Chicago area commuters using public transportation to strike up a conversation with someone near them.

在一系列研究中，研究人员指导芝加哥地区乘坐公共交通工具的通勤者与附近的人进行交谈。

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Second, using public transportation saves energy.

其次，使用公共交通工具可节省能源。

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Other simple steps that make a big difference include using public transportation instead of driving private cars.

其他一些简单的做法也能产生巨大的影响，包括使用公共交通工具，不开私家车。

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Most travellers report that using public transportation to get around the city is easier, cheaper and faster than driving.

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Research has shown that bystanders in situations where they are not free to leave (for example, waiting for or using public transportation) often find cell phone conversations annoying.

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In the long term it may not be such a bad thing to get people thinking about fuel efficiencies and even using public transportation rather than driving everywhere they have to go.

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