Highway Engineering
Scientific planning of transportation system and mass transit facilities in cities should be based on

spot speed data
traffic volume data
origin and destination data
accident data

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Highway Engineering
The entrance and exit curves of a rotary have

different radii and different widths of pavement
equal radii and equal widths of pavement
equal radii but pavement width is more at entrance than at exit curve
equal pavement widths but radius is more at entrance curve than at exit curve

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