RADROAD-APEX Platform

One platform.
Every application.

Infrastructure-grade illuminated signs. Modular architecture. Upgradeable from fixed illumination to detection-triggered, connected systems.

Modular by design.

Every RADROAD-APEX sign starts with the same foundation. Add capability as your deployment requires.

APEX I

Illuminate

Internally illuminated with even, uniform luminance behind retroreflective sheeting. Fail-safe — unpowered, it's a standard sign. Powered, it's visible at 1,000+ ft.

Available Now

View APEX I →

APEX II

Detect

Radar-based vehicle detection. Dynamic luminance response — the sign reacts to approaching traffic. Configurable trigger zones.

In Development

View APEX II →

APEX III

Connect

Cellular telemetry. Battery health, temperature, luminance status, tamper alerts. Fleet-wide monitoring from a single dashboard. Mesh coordination for multi-sign systems.

In Development

View APEX III →

RADROAD-APEX technology is patent pending.

Applications

The same illumination platform configured for different deployment environments.

Overhead illuminated speed limit sign in tunnel

Overhead & Fixed Signs

Tunnel-rated and gantry-mounted illuminated signs. AC-powered. Engineered for permanent overhead installation. Speed limit, lane control, and regulatory applications.

APEX I Overhead AC Power
Illuminated STOP sign at night

Regulatory Signs

Pole-mounted illuminated STOP, speed limit, and regulatory signs. Solar-autonomous or line-powered. Optional detection for dynamic luminance response.

APEX I–III Solar Detection
Portable illuminated roadwork ahead sign

Work Zone & Temporary Traffic

Portable illuminated signs for temporary traffic control. Swappable sign faces. Battery-powered. Rapid deployment for construction and maintenance zones.

APEX I–III Portable Battery
Illuminated chevron signs on highway curve

Curve Guidance

Coordinated illuminated chevrons for curve delineation. Multi-sign systems with local mesh coordination. Dark-sky-friendly low-luminance signaling.

APEX I–III Mesh Dark Sky
pedestrian-crossing.jpg

Pedestrian Signage

Illuminated pedestrian crossing signs and overhead walk signals. Button-activated or detection-triggered. Mounted overhead on traffic signals or at mid-block crossings to alert drivers to pedestrian activity.

APEX I–III Overhead AC Power Radar Alert
tma-truck-sign.jpg

TMA Truck-Mounted Signs

Illuminated signs mounted directly to truck-mounted attenuator (TMA) vehicles. Rapid attach/detach for work convoys. High-visibility warning and regulatory messaging on the crash guard trucks already deployed in every work zone.

APEX I–III Truck Mount 12–24 VDC Work Zone
light-bar.jpg

APEX Light Bar

Standalone illuminated light bar accessory. 4–6″ tall, 24–48″ wide. Exchangeable faceplates for red/blue, amber, or custom color signaling. Mounts to TMA trucks, barriers, or any flat surface. Standalone or paired with APEX signs.

Accessory Signaling Swappable Faceplate 12–24 VDC
Illuminated wrong way sign on highway ramp

Wrong-Way Detection

Wrong-way entry detection and illuminated warning for highway off-ramps. Radar-triggered escalating response. Optional audible alert interface.

APEX II–III Radar Alert

Platform Specifications

Baseline specifications across the RADROAD-APEX platform. Application-specific configurations available on request.

ParameterSpecificationNotes
IlluminationInternally illuminated, evenly illuminatedUniform luminance across all sign sizes
Sign FaceORAFOL ORALITE® retroreflective sheetingASTM D4956 compliant · Fail-safe: unpowered = standard sign
Sign Sizes30" to 10'+ scalableModular parametric design
Wind Load (target)150 mphPer AASHTO LTS-6
Operating Temp (target)−40°F to +135°FContinuous
Target MTBF≥ 50,000 hrReliability model
Power Options120 VAC · 12–24 VDC · Solar + batteryApplication-dependent
Detection (APEX II+)Radar detectionConfigurable zones
Connectivity (APEX III)LTE-M / NB-IoT cellularTelemetry + fleet monitoring
Compliance (targets)UL 48 · FCC Part 15 · MUTCD · BABACertification in progress

These specifications represent the best knowledge of Radiant Roadways at the time of publication and are subject to change. Technical specifications vary across product lines; the values listed here are intended to be representative of the minimum specification across all RADROAD-APEX products. Final production specifications will be confirmed upon completion of certification testing.

Why RADROAD-APEX

Fail-Safe Visibility

Retroreflective sheeting on every sign face. Power loss doesn't mean visibility loss. The sign works without electricity.

Built for Crews

Fast setup. Gloved-hand operation. Standard mounting interfaces. Clear status indicators. Designed for how traffic control actually works.

Dark-Sky Friendly

Minimum effective luminance. Meaningful signaling patterns instead of nuisance brightness. Reduced driver distraction and light pollution.

Serviceable

Modular subassemblies. Field-swappable faces, power modules, and controllers. Spare-parts kits designed for what a foreman keeps on the truck.

BABA Ready

Domestic manufacturing. Documented sourcing. Traceability for federal-aid procurement. Reduce your compliance friction.

Warranty-Backed

5-year standard warranty target. Designed for roadside extremes — UV, salt, vibration, temperature cycling, impact.

Designed for more visible traffic control — improving work zone awareness and safety.

Need a configuration for your deployment?

Contact us for application-specific specifications and pilot program details.

Request Pilot