Laser-aid fire evacuation guidance system

An evacuation guidance system in combination with a building having a hallway leading to an exit, the fire evacuation guidance system comprising:

• a first laser emitting device emitting a first laser beam of a first color, the first laser emitting device and the first laser beam being located at a first side of the hallway defining a path, the first laser beam being located adjacent the exit;
• a second laser emitting device emitting a second laser beam of a second color different from the first color, the second laser beam being located at a second side of the hallway opposite the first side of the hallway, the second laser emitting device and the second laser beam being located adjacent the exit, said first and second laser beams are parallel to each other;
• and
• a first reflective device and a second reflective device, the first laser beam being directed around a turn in the hallway by the first reflective device, the second laser beam being directed around the turn in the hallway by the second reflective device;
• wherein
• said first color of said first laser beam on one side of the path and the second color of the second laser beam is on an opposite side of the path to orient a user by placing the user between the two laser beams such that the first color laser beam is on the user's right hand side, the user is directed along the evacuation path to the exit so that the first and second laser beams are indicative of a direction toward the exit;
• and
• a sensing device disposed adjacent the exit, the sensing device reversing the colors of the first and second laser beams when an unsafe condition is sensed at the exit wherein the second laser beam becomes the first color and the first laser beam becomes the second color, the first color of the second laser beam being indicative of a direction away from the exit.