The BUSINESS (M4-3) auxiliary sign is mounted directly above a route sign to designate an alternate route that branches from a numbered route, passes through the business portion of a city, and rejoins the numbered route beyond that area. This sign is a horizontal rectangle with a black legend and border on a white background.
- Retroreflective sign is visible day and night
- Durable, weather-resistant traffic grade aluminum
- Pre-punched with radiused corners and 3/8" mounting holes