The Swedish Plus Test is a frontal impact carried out by the Swedish Transport Institute (VTI). It is done at 56.5kmh/35mph and uses a shorter braking distance than other tests, making the impact even more severe. It uses the more advanced Q-dummies and is the only car seat crash test in the world that measures the loads on the child's neck. In all forward facing car seats the loads on the neck are higher than the safe maximum. This is why only rear facing car seats can pass the Swedish Plus Test.
