600x800mm- Class 1 – Aluminium – 90 km Speed Restriction in Roundel

The R4-1B(90) speed restriction sign provides essential speed limit communication for higher-speed road environments while maintaining a compact efficient footprint. This 600x800mm regulatory sign displays the 90 km/h speed limit within the universally recognized red circular roundel on white background, ensuring immediate comprehension by all motorists familiar with Australian road signage standards. Manufactured from premium 1.6mm aluminium sheeting with Class 1 high-intensity reflective vinyl laminate, the sign maintains excellent visibility throughout day and night operation across varied weather conditions. The Class 1 reflective coating features microprismatic technology that captures and returns light from vehicle headlights with exceptional efficiency, ensuring the speed limit remains clearly visible during nighttime driving, in challenging weather conditions, and when approached from various angles. The aluminium substrate provides outstanding durability, resisting corrosion, warping, and environmental degradation while maintaining structural integrity across temperature extremes and prolonged weather exposure. UV-resistant inks and fade-proof materials ensure the speed limit numerals remain crisp and legible throughout years of outdoor service without deterioration. Pre-drilled mounting holes enable straightforward installation on standard Australian sign posts or existing mounting infrastructure for rapid deployment. Full compliance with Australian Standard AS1742 makes this sign suitable for public road applications and private property installations requiring regulatory compliance and professional traffic management. Typical applications include semi-rural collector roads, industrial estate primary access routes, large facility perimeter roads, mining site access roads, and transitional areas between rural and urban zones where 90 km/h provides appropriate speed management for conditions.