Cisco is embedding sensors in Madrid's traffic signals to make the city traffic-free.

Cisco正往马德里交通信号灯上装传感器，以使得该市成为交通无需人工干预的城市。

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This was not always easy to achieve, especially in built-up areas where few traffic-free corridors remained.

这个目标的实现并不轻易，尤其是在仅有少量剩余自由行驶廊道的建成区。

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And that should help us design better energy distribution systems, plan for traffic-free cities and manage the deployment of the world's resources.

Vespignani说，“那应该会帮助我们设计出更优的能源分布系统，为无交通城市做出更好的规划，以及更好地分配全球的资源。”

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It just represents the 70-odd kilometres that there are of Edinburgh's completely off-road, traffic-free pathways.

BBC: Edinburgh cyclists launch interactive 'innertube' map

Festival Way runs via Flax Bourton and includes a new traffic-free section between Ashton Court and Long Ashton.

BBC: Festival Way cycle path from Bristol to Nailsea opens

Councils will be required to connect key sites such as hospitals, schools and shopping areas with traffic-free routes and cycle lanes.

BBC: Cyclist