1.

As the unevenness index increases there is no substantial increase in _____________(a) fuel consumption(b) wear and rear of tyres(c) vehicle maintenance cost(d) increase of speedThe question was posed to me in an interview for internship.My question is taken from Design of Road Pavement in section Valuation, Reports Technical and Design Data of Civil Engineering Drawing

Answer»

Correct choice is (d) increase of speed

For explanation I would say: As there is an increase in the UNEVENNESS index, there is no substantial increase in speed, instead it decreases.

Unevenness index is a measure of unevenness which is the cumulative measure of vertical undulations of the PAVEMENT surface recorded PER unit horizontal length of the road. An unevenness index value less than 1500 mm/km is considered as good, a value less than 2500 mm.km is satisfactory up to speed of 100 kmph and values greater than 3200 mm/km is considered as uncomfortable even for 55 kmph.



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