GWT provides a high level of obfuscation that mitigates the problem to a degree, but a secondary point of attack remains: any HTTP traffic that travels between your GWT client and its services.

GWT提供了高层次的混淆，从而可以将这个问题降低到一定程度，但是仍然存在次要攻击点：GWT客户机及其服务之间的HTTP通信量。

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Knowing simply that traffic congestion is getting worse, for example, helps you make high level decisions to focus on road maintenance or public transportation.

例如，发现交通拥堵情况变坏，有助于高层决策部门关注于道路维护和公共交通。

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It works well if the traffic load is not so high, but the problems emerge and cause many troubles when the traffic load increases to a certain level.

这使得系统在平时消息量不大的时候工作得很好，但是随着通信负荷的增长，各种潜在的问题便逐渐浮现出来。

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In 1979 3M revamped its technology--sold under the Opticom brand--to allow it to recognize two different priority levels: a high level for emergency vehicles, which could force traffic lights to change immediately and a lower level for transit vehicles, which could hold off changing the light entirely if changing the light to green would snarl traffic.

FORBES: Magazine Article

Network Rail said the level crossing was not deemed as "high risk", as it is on a quiet road with little traffic.

BBC: Level crossing crash: One dead as train hits car