Solar Powered Street Lighting
Solar powered street lighting could help in areas where the infrastructure (or the will) doesn't exist to create adequate lighting at night.
I've noticed that it is used in Australia to light real estate signs so the technology already exists. (e.g http://www.ledworld.com.au/products-2/led-solar-lights/solar-light-sign-real-estate/)
They are around $300 (australian) dollars each and could possibly be installed locally.