Why rails have gaps at specific distances?

1.	Why rails have gaps at specific distances?
Answer» Answer: so that rail donot OVERLAP each other.And accident may not be caused. Explanation: gaps are because in SUMMER DUE to heat metal expands . So the molecule present in rail i.e is of iron also losses it's rigidity and expands. And if gaps are not given they may overlap .So,there is gaps between them.

Answer»

Answer:

so that rail donot OVERLAP each other.And accident may not be caused.

Explanation:

gaps are because in SUMMER DUE to heat metal expands .

So the molecule present in rail i.e is of iron also losses it's rigidity and expands.

And if gaps are not given they may overlap .So,there is gaps between them.

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