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The city is using sand trucks to place on the road during ice conditions which best explians the use of the sand
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The city is using sand trucks to place on the road during ice conditions which best explians the use of the sand

User Dazzler
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The sand provides a rough surface on top of the ice for the cars' tires to grip onto. It provides more friction. Salt melts the ice and often provides more friction (the disadvantage is that it eats concrete!).
User Emilly
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