if you’re on the freeway, few things can ruin your drive more than a SigAlert a warning that traffic is about to come to a bottleneck - or worse. But who is Sig and how did he come up with this alert? Well in a special episode brought to you injuryneeds , it turns out that SigAlerts are more than 70 years old, and originally intended as warnings during the Cold War with Russia! Whaaat? Let’s get into it! #sigalert #losangeles #lainaminute #injuryneeds