Homeland Security @DHSgov
You can learn more about the ADRAS system here: https://t.co/QeDLiuFCG1 https://t.co/YZ997LWG3m — PolitiTweet.org
DHS S&T @dhsscitech
ADRAS sirens/speakers alert oncoming #drivers to slow down when approaching an incident scene. Vests flash/vibrate… https://t.co/7tj5mG3kxH