I'm not sure its the roads are the issue.
Of course not but road planning needs to allow for the fact that there are idiots out there who let their car run out of fuel or will plough into car in front because they were on Whatapp/tiktok, etc or suddenly swerve into next lane with no indication.
Crazy that road with volume and critical importance of N40 does not have proper hard shoulder where incapacitated vehicles can be moved to in event of breakdown or collision and which allows emergency vehicles, tow trucks to get to and clear scene of crash quickly.