Street Light Guidance Feasibility

 https://www.linkedin.com/pulse/how-does-street-light-work-ada-wang/

• Street lights are electric lamps with photocells. Photocells are "light-sensitive sensors" and if they aren't receiving light (e.g. sunlight) then they let an electric current pass, granting power to the lamps, creating light.
• Most, if not all modern street lights work the same. However one of our ideas for evacuation guidance involves using street lights to guide people away from high risk zones towards safe zones. This implies that street lights would need to activate separately from photocells when our A.I. and evacuation officials say so. 
• What this means is that hundreds of street lights within proximity of a volcano would need to be replaced or updated.
• There's also the issue of a daytime eruption, reducing the effectiveness of street lights.
  
• While the lights are visible at the head, it's nowhere near as effective as at night. Even on a cloudy day, you can see the light on the floor.