NTSB issued recommendations urging NHTSA to take action to improve safety of tractor-trailers. In addition to eliminating blind spots, recommendations call on NHTSA to require that newly manufactured truck-tractors and trailers be equipped with side underride protection systems, and that revisions be made to improve rear underride guard standards. NTSB also recommends that NHTSA add information on trailer model year and vehicle identification numbers to its national database of fatal ...This story is related to the following:Trade Associations