Question:
The recommended minimum traffic growth rate and design period considered for structural design of flexible pavements for national highways in India as per IRC 37:2018 is __________ percentage and _________ years, respectively.
The recommended minimum traffic growth rate and design period considered for structural design of flexible pavements for national highways in India as per IRC 37:2018 is __________ percentage and _________ years, respectively.
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Refer to IRC 37:2018 for standards related to pavement design parameters like design life and traffic growth.
Updated On: Feb 4, 2026
- 5, 20
- 5, 30
- 7, 20
- 7, 30
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The Correct Option is A
Solution and Explanation
As per IRC 37:2018 (Guidelines for the Design of Flexible Pavements), the following values are recommended for the structural design of flexible pavements for national highways:
- Minimum traffic growth rate: 5%
- Design period: 20 years
These values are taken as the default unless actual traffic studies suggest otherwise.
Hence, the correct option is (A).
- Minimum traffic growth rate: 5%
- Design period: 20 years
These values are taken as the default unless actual traffic studies suggest otherwise.
Hence, the correct option is (A).
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