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Q: If the 30th highest hourly volume is adopted for design, there will be congestion on road for only.
  • A. 30 hours in a year
  • B. 70 hours in a year
  • C. 29 hours in a year
  • D. 0 hours in a year
Correct Answer: Option C - As per IRC 108-2015, design hourly volume in a year which is used to judge the capacity requirement. • Design hourly volume is normally taken as 30th highest hourly volume which means that only for 29 hours in a year the traffic volume can exceed the design volume. • The volume of traffic during the peak hour expressed as percentage of total 24 hour traffic volume in a day.
C. As per IRC 108-2015, design hourly volume in a year which is used to judge the capacity requirement. • Design hourly volume is normally taken as 30th highest hourly volume which means that only for 29 hours in a year the traffic volume can exceed the design volume. • The volume of traffic during the peak hour expressed as percentage of total 24 hour traffic volume in a day.

Explanations:

As per IRC 108-2015, design hourly volume in a year which is used to judge the capacity requirement. • Design hourly volume is normally taken as 30th highest hourly volume which means that only for 29 hours in a year the traffic volume can exceed the design volume. • The volume of traffic during the peak hour expressed as percentage of total 24 hour traffic volume in a day.