This early study is already somewhat outdated but showed the technology works and can be a useful tool. There were false positive warnings for overhead hardware and signs and in curves but newer technology already exists that would improve effectiveness in these situations. There were no rear end crashes in the study and no independent drivers agreed to participate. We feel this technology is advanced enough to be effective in preventing most driver fatigue and inattention crashes of big trucks. Hours of Service adjustments can be helpful but this technology will prevent crashes now. It should be required in all new trucks in the U.S., NHTSA is late to the game as usual.