why do roads have little curves and not just a straight line?
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As someone living in Australia, where we have the longest straight road in the world, I know the answer to this!
Usually, it’s natural pathways etc etc.
But! For long roads that would otherwise be straight, curves are artificially added for safety. Straight roads are a hazard due to driver inattentiveness, boredom, sleep etc. The longest straight road (on the way across the Nullarbor plains) was created during the war, mainly for military supplies. It is one of the most crash-prone areas in the journey across the Nullarbor, because due to its straightness, drivers are unable to maintain attentiveness to the road.
Therefore, point is, long roads that could be straight, have curves placed in arbitrarily, to reduce crashes and increase safety.
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