The Insurance Institute for Highway Safety (IIHS) conducted an important crash test on March 30, 2017. They crashed a car at 35 mph into the side of a trailer equipped with AngelWing side guards. This crash test was later repeated successfully at 40 mph at the Second Underride Roundtable on August 29, 2017. It was official. Deadly side underride tragedies could be prevented.

What seemed perhaps even more significant was the fact that the following day, March 31, 2017, the IIHS conducted a second crash test into the side of a trailer — only this time, there was no side guard. The stark contrast of the two crashes was captured on film for all to see. Who could argue the benefit of this feasible feat of engineering technology?

Apparently it has not been enough to convince everyone, as we are still struggling to bring this uphill battle to an end five years later. Pray that Pete Buttigieg, the Secretary of Transportation, who is tasked by Congress with making a determination this year, will conclude that saving lives is worth the cost to require trailer manufacturers to equip new trailers with side guards. Otherwise, the inaction of industry and government will allow the senseless, violent slaughter of unprotected road users to continue day after day, year after year — while engineering solutions sit on the shelf gathering dust.

Back of the Envelope Math: How many side underride deaths since March 19, 1969?

Guided Tour of the Truck Underride Exhibit at the IIHS: