Traffic congestion often occurs at the bus stop.

公交站点是交通拥挤的常发地点。

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Officials used the theme "Greener Traffic, Cleaner air" to encourage car owners to take public transportation more often and help ease road congestion and contribute to better air quality.

此次活动的官方主题为“绿色交通•清新空气”，旨在鼓励有车一族多乘坐公共交通出行，从而缓解交通拥堵，提升空气质量。

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Lack of detailed traffic engineering design during roadway planning and design stage often leads to urban congestion problems that need remedy solutions from traffic engineering.

道路交通工程设计在规划设计阶段的缺失，使其往往成为缓解道路交通拥堵的补救措施。

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Even with advances in GPS navigation, real-time traffic alerts and mapping, daily commute times are often unreliable, and relevant updates on how to avoid congestion often reach commuters when they are already stuck in traffic and it is too late to change course.

ENGADGET: IBM shows off Smarter Traveler traffic prediction tool

But video poses real challenges, as it consumes considerably more bandwidth than both voice and data, and video quality degrades substantially, often unacceptably, when network congestion interrupts or delays individual packets in traffic streams.

FORBES: Bridging The Data Deluge Gap