The utility model can display safety driving speed according to the fog conditions so as to remind drivers in foggy days and prevent traffic accidents.

本实用新型可根据雾的浓淡显示出安全行驶车速，以提醒司机在雾天注意安全行驶，避免交通事故发生。

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His driving speed is about 80 miles per hour.

他的行车速度大约是每小时80英里。

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In the vicinity of target position, the driving speed is lowered to one-step to guarantee the position accuracy.

在定位误差带附近自动降为单步驱动，保证定位精度。

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Waze tracks the driving speed of everyone using it, a feat of passive crowdsourcing that works whenever people have the app running.

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As you drive around, the app will tell you just how much your driving is actually costing you based on that last fill-up and your driving speed.

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When your driving speed is above 25MPH, the service (which can be disabled if you prefer) sends an automatic SMS response to anyone who calls you or sends a text, letting them know you'll get in touch with them as soon as you've finished your journey.

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