Guardrails, much like the crumple zones of cars, are designed to give way to dissipate energy. This is a safety feature which saves lives. There isn’t going to be a one-size-fits-all-traffic guardrail. It’s about statistically improving outcomes, but unfortunately they aren’t going to help in all cases. Maybe they need to be updated, but it’s going to take time to adjust to changing average vehicle weights.
Guardrails, much like the crumple zones of cars, are designed to give way to dissipate energy. This is a safety feature which saves lives. There isn’t going to be a one-size-fits-all-traffic guardrail. It’s about statistically improving outcomes, but unfortunately they aren’t going to help in all cases. Maybe they need to be updated, but it’s going to take time to adjust to changing average vehicle weights.
https://www.fhwa.dot.gov/guardrailsafety/guardrail101.pdf