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Roadways and junctions
Traffic Mirror FAQ
Plan mirror size, placement, and local approval for driveways, blind bends, and traffic approaches.
Category resources
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Outdoor backing guide
Use the backing guide when weather and corrosion resistance are part of the traffic install.
Outdoor mounting guide
Check post, wall, and wind-exposure guidance before choosing the final traffic mirror mount.
basicsWhat is a traffic safety mirror?
A traffic safety mirror is a convex mirror used to improve visibility at roadways, driveways, blind bends, parking lot exits, and vehicle intersections. It helps drivers see cross traffic and pedestrians where direct line of sight is limited.
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sizingHow do I work out what size traffic mirror I need for a blind bend?
Start with viewing distance and vehicle speed. The 1 inch of mirror diameter per 1.5 feet of viewing distance rule is a useful baseline, then size upward for faster approaches, long sight distances, or complex junctions.
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installationWhere should traffic mirrors be positioned at blind junctions or driveways?
Place the mirror where drivers can see it before they reach the decision point, and aim it toward the approach lane or cross traffic they need to view. Avoid vegetation, signs, poles, glare, and angles that confuse drivers.
complianceDo traffic mirrors comply with local road or municipal regulations?
Rules vary by location. Mirrors on private property are often treated differently from mirrors placed on public roads, public poles, or municipal right-of-way. Always check local requirements before installing a traffic mirror on public property. In the United States the relevant federal standard for public-road traffic control devices is the Federal Highway Administration's Manual on Uniform Traffic Control Devices (MUTCD), but states and municipalities may add or modify requirements.
Sources: FHWA — Manual on Uniform Traffic Control Devices (MUTCD)