It sounds like they made the test harder because the market has matured: > The old test was done at 12 and 25 mph. Now that automakers' tech has improved drama

It sounds like they made the test harder because the market has matured: > The old test was done at 12 and 25 mph. Now that automakers' tech has improved dramatically since the first test was designed, the IIHS bumped the speeds up to 31, 37, and 43 mph. > The vast majority of new vehicles now come with automatic emergency braking, and our research shows the technology prevents as many as half of all front-to-rear crashes. This new, tougher evaluation targets some of the most dangerous front-to-rear crashes that are still happening," said IIHS President David Harkey. Making this a required feature seems like a great way to get manufacturers not to skimp on development.