This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
Nebraska requires lamp on the front emitting a white light visible from a distance of at least 500 feet to the front, required between sunset and sunrise. For the rear, red reflector on the rear of a type approved by the nebraska department of motor vehicles, visible from all distances from 600 feet to 100 feet when directly in front of lawful lower-beam headlamps. a red rear lamp visible from 600 feet may be used in addition to the reflector. The rule applies whenever it is dark. See Neb. Rev. Stat. § 60-6,320 (Lamps and other equipment on bicycles).
The cheapest way to stay legal in Nebraska is a USB-rechargeable front white light and a rear red light or reflector that meets the spec above. A $30 light set covers it.