Perry Ponder, inventor of the AngelWing side guard, has made another great contribution in the pursuit of improved underride protection. Earlier this week, I saw that I had received a notification of a new public comment on the rear guard NPRM.
His letter begins with this comment:
As NHTSA moves at a glacial pace toward revising FMVSS 223 and 224, I’d like to point out an underride guard mode of failure I have observed while investigating a number of trailer and truck underride accidents.