Finding : Car cannot go uphill during traffic jam / start-stop condition
Root Cause : the car is designed for 26% gradient as this is the JKR standard for hill slope but the hill has 31% gradient
corrective action : recommend JKR to resurface so that the hill has 26% gradient

will it better to design the car or any other car able to climb hill more than 26% gradient? shouldn't the design parameter more than working parameter?