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Information (A horizontal curve connects two tangents that deflect at an angle of 45o on a...

Information (A horizontal curve connects two tangents that deflect at an angle of 45o on a two lane rural collector highway. The point of intersection of the tangents is located at station (658 + 16.13). If the design speed of the highway is 70 km/h and max. allowable superelevation rate is used. )

the question is (For the information given in question 2 above, and if the highway enters an urban area, and the normal crown cross section is to be maintained, what will be the min. radius to allow safe operation. If the design vehicle in such case is the city bus, what is the widening per lane, if needed? Draw cross sections illustrating your answers.

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