What is the required lighting direction and distance for emergency ground egress?

• A. 45 degree angle at 300 feet
• B. 30 degree angle at 100 feet
• C. 90 degree angle at 200 feet
• D. 60 degree angle at 500 feet

Answer: (A)

Emergency ground egress lighting is about guiding people safely along the escape path by keeping the floor and obstacles clearly visible even in low light. Directing the light at a 45-degree angle toward the path provides oblique illumination that hits the floor ahead and to the side, which helps you see steps, edges, and markings without causing harsh glare from fixtures. Spacing the lights about 300 feet apart maintains continuous coverage across long corridors or ramps, reducing the chance of dark gaps where hazards could be missed. Other options don’t strike the same balance: a 90-degree orientation tends to glare and may not illuminate the floor effectively; a 30-degree angle with only 100-foot spacing would require many fixtures and isn’t necessary for proper coverage; a 60-degree angle at 500-foot spacing could leave parts of the path inadequately lit. So the 45-degree angle with 300-foot spacing best supports safe, continuous egress lighting.