Highway Engineering
The diagram which shows the approximate path of vehicles and pedestrians involved in accidents is known as

spot maps
condition diagram
pie charts
collision diagram

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Highway Engineering
For a constant value of coefficient of lateral friction, the value of required super-elevation increases with

decrease in both speed and radius of curve
increase in both speed and radius of curve
increase in speed and with decrease in radius of curve
decrease in speed and with increase in radius of curve

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