(English) Usable traffic signals

对不起，此内容只适用于English。

评论

  1. I lived in HK and visited China regularly in the 90s. The countdown made a huge difference to traffic flow in my opinion. We should try and get it introduced in England…

    Des

  2. Wikipedia has an interesting page covering traffic lights…

    http://en.wikipedia.org/wiki/Unusual_uses_of_traffic_lights

    Des

  3. They have had them here a while in Spain and it has some interesting effects such as when users know a light is long with a short time for crossing (exactly where there is HEAVY traffic) they are prepared to cross against the light, go early, and go late. And the part where it counts down time left to cross REALLY makes the older people nervous.

    mlmb

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