According to research by the Society of Automotive Engineers, drivers either neglect to use their signals when changing lanes – or fail to turn the signals off – 48% of the time. And when making a turn the failure rate is around 25%. That works out to 2 billion times a day drivers fail to use signals, or 750 billion times annually.
the SAE study says the problem results in about 2 million roadway collisions annually. That’s more than twice the 950,000 accidents linked to distracted driving