Words have power. Words convey meaning. Let’s choose words which will enhance understanding and catalyze life preserving action.
Take the word #underride for example. How many people realize that an underride guard is a “simple” engineering device which — if properly designed and installed — can prevent a passenger vehicle, as well as pedestrians, bicyclists, and motorcyclists, from ending up under a truck in the event of a collision?
For over a century now, despite industry and government awareness of the problem, underride tragedies have been allowed, for the most part, to go unchecked. Amazingly, a 1915 patent for a safety device to prevent side underride predates the first patent for a traffic signal filed in 1922:
Unfortunately, there has been too much confusion about the gaping space below a truck’s floor which leads to horrifying injuries when there are collisions with the front, side, or rear of a large truck — not to mention too little action taken to correct that dangerous design. One misunderstanding that I’d like to clear up relates to side underride.
Lateral Protection Device (LPD) is a term coined for equipment installed on the side of a truck to prevent Vulnerable Road Users (pedestrians, bicyclists, and motorcyclists) from being swept under. It is not designed to stop a passenger vehicle from going under. A Side Skirt is a relatively flimsy device, which is designed to improve aerodynamics and save fuel; it is not designed to prevent underride. A Side Underride Guard (SUG) or Side Impact Guard (SIG), on the other hand, is designed to prevent a passenger vehicle from going under a truck. Thankfully, it will also protect Vulnerable Road Users from being killed under a truck. And, by the way, it adds to the fuel savings of side skirts.
That is why a SUG or SIG can rightfully be called a LPD+; it does what an LPD is meant to do — and so much more. Why on earth would we require or install equipment on the U.S. fleet which is less effective than a LPD+ that is designed to protect All Road Users? *
Unbelievably, all we have at present is a patchwork quilt of underride standards, or lack thereof, in this country. It’s high time that our nation’s highway traffic safety agency step up to the plate. @NHTSAgov, make wise and timely use of the Advisory Committee on Underride Protection to provide guidance which appropriately defines and regulates underride devices — thus fulfilling your mission to reduce emissions and save lives. Otherwise, we can expect more of the same: Death By Underride day after day, year after year.
* The term LPD+ was suggested by Garrett Mattos on December 2, 2022, during a Zoom discussion among underride experts and advocates collaborating together as TEAM Underride to advance the implementation of engineering devices to prevent Death By Underride for All Road Users.
