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.
Show Hint
Refer to IRC 37:2018 for standards related to pavement design parameters like design life and traffic growth.
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.