ceramic solar road stud for expressway
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ceramic solar road stud for expressway

Standard solar road studs require car headlights to illuminate their reflective surfaces, which usually means the headlights can be seen from 90 meters away. So a driver traveling at 60 mph has about three seconds to react. Solar road studs – with a panel that absorbs energy during the day – generate their own light at night via battery-powered LEDs that can be seen up to 900 meters away, giving drivers traveling at 60 mph more than 30 seconds of reaction time .

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