Glowing lines will show even where your headlights are not shining. Curves and intersecting streets come to mind. Even gaps in the line for a driveway would be

Glowing lines will show even where your headlights are not shining. Curves and intersecting streets come to mind. Even gaps in the line for a driveway would be apparent. We have some reflectors, but the cost of installing snowplow survivable ones is high enough that they are not justified according to our highway department. (Missouri, USA, 38°N) If the glow doesn't add too much to the cost of the paint, it could be a winner.