600x800mm – Class 1 – Aluminium – 50 km Speed Restriction in Roundel

The R4-1B(50) speed restriction sign delivers authoritative speed limit communication through proven regulatory design principles. Measuring 600x800mm, this sign features the iconic 50 km/h speed limit displayed within a red circular roundel on white background, utilizing design standards instantly recognizable to all Australian drivers. Constructed from premium 1.6mm aluminium sheeting and laminated with Class 1 high-intensity reflective vinyl, the sign maintains exceptional visibility across all lighting conditions. The Class 1 reflective material features advanced microprismatic technology that reflects vehicle headlights with exceptional efficiency from wide angles, ensuring the speed limit remains clearly visible during nighttime operation and in poor weather conditions including rain, fog, and dust. The aluminium substrate provides superior durability, resisting corrosion, warping, and degradation from prolonged sun exposure while maintaining structural integrity through temperature extremes. UV-resistant inks and fade-proof materials ensure the speed limit numerals remain crisp and legible throughout years of outdoor service. Pre-drilled mounting holes enable secure installation on standard Australian sign posts or existing infrastructure. Full compliance with AS1742 traffic control device standards makes this sign suitable for public road applications as well as private property use requiring regulatory compliance.