Emergency Situation Message Boards as well as their Effectiveness Emergency message boards have actually ended up being increasingly more prevalent lately. Message boards alert of emergencies on the freeway such as accidents, delays, and also Brownish-yellow signals. Although the near-universal belongings of mobile phones has triggered a boost in directing such urgent notices via cordless as well as mobile networks, however one still sees the physical indicators at entrances to high schools, before churches, as well as in sporting activities arena.