What do red reflectors on the road indicate?

Red reflectors on the road are indicative of a prohibition against proceeding or entering that roadway. They are commonly used to signify that a driver is approaching a section of the roadway where entry is restricted, often seen on the opposite side of a two-way road to alert drivers to stay on their side.

In this context, red reflectors help to ensure safety by guiding drivers away from potentially hazardous situations or areas where they should not be driving, such as a one-way street against traffic or a barricaded road. This visual cue is a vital component of roadway safety regulations and helps prevent accidents by dissuading drivers from taking dangerous routes.