Here's why I use arm and hand motions to get the attention of the motorized vehicle drivers around me when I bike.
What’s the number one driving mistake that causes crashes?
Answer: Multi-tasking while driving, which is particularly a problem among young drivers. A survey of 2,300 teens around the US released this month found that 68 percent of them were involved in near-miss collisions in 2010-2011 due to distracted driving, including changing songs on portable devices with screens, cell phone use, and texting. The government reports that in 2009, an estimated 448,000 Americans were injured in crashes caused by distracted driving, and 5,474 were killed.