Download: C Tra Kxb Specification Sheet (Covering P6, P16, P20, P25, P31.25, P33.33, P37.5 DIP Platforms)]
Download: C Tra Kxb Specification Sheet (Covering P4 EN12966, P16 Traffic Lens, P10 DIP, P20 Hollow Platforms)
Traffic VMS LED Display Specifications: The Complete Infrastructure Selection Guide (P4 to P37.5)
For intelligent transportation system (ITS) planners, mechanical and electrical engineering (M&E) contractors, and highway authorities, drafting a Variable Message Sign (VMS) or Lane Control Sign (LCS) tender requires granular engineering data. Road networks present highly fragmented environments—ranging from low-speed, highly informative toll plazas to high-speed, gale-prone coastal expressways. One universal display configuration cannot safely or cost-effectively satisfy these distinct structural and visual demands.
To assist design consultants in verifying optical contrast, wind load thresholds, and electrical distribution schemes for global road construction, Chipshow has consolidated its comprehensive traffic hardware ecosystem into two definitive engineering repositories.
1. High-Density Multi-Functional Matrix: Toll Plazas and Passenger Information Systems (PIS)
At terminal interchanges, manual toll gates, and urban transit hubs, visual assets must display complex alphanumeric data (vehicle classifications, fee structures, lane availability) to drivers operating at shorter, braking-range distances.
The P4 Die-Cast Aluminum Platform (Certified EN12966 Code)
Engineered for strict regulatory alignment with global road infrastructure codes, the P4 1280×640mm architecture is built around precision aluminum alloy framing (weighing a structural-friendly ≤40kg/㎡).
- International Standards Compliance: Fully certified to the stringent European EN12966 Standard, achieving documented performance tiers across Class L3 (Luminance), R3 (Contrast Ratio), C2 (Chromaticity), and environmental categories P3, T1, and T3.
- Intense Illumination Envelope: Driven by highly stable SMD1921 arrays on a 4mm pitch, it outputs a certified peak brightness of ≥10,000 cd/㎡ (nits), preventing solar washout under intense horizontal midday sun rays.
The P6 Integrated Lane Control Sign (LCS)
Designed specifically for manual and Electronic Toll Collection (ETC) lane entries, the P6 960×960mm iron framework acts as a fully integrated roadway safety hub rather than a standalone display.
- Unified Signaling Layout: Features a built-in two-color mechanical traffic light layout flashing a rigid red “X” and green “√”, streamlining structural spacing on low-clearance portal headers.
- Autonomous Incident Backups: Outfitted with an automated abnormal alarm interface that activates localized yellow flashes and paired audio-visual alerts the moment lane communication or payment processing encounters friction.
- Acoustic Synchronizer Integration: The internal HUB75 circuitry links natively with lane controllers and voice reading modules to instantly pair on-screen validation text with audible automated passenger alerts.
2. Mainline Highway Arterials: Mid-Range Gantry VMS and Advanced Optical Lenses
On fast-moving trunk highways and intercity expressways, signs require exceptional fog penetration, wider legibility indices, and tight directional light focus to ensure driver reaction windows remain secure.
The P16 Traffic Lens System (Advanced Focus Technology)
Traditional wide-angle LEDs spill light into the night sky, causing local light pollution and wasting power. The P16 Traffic Lens variant re-engineers this optical path utilizing precise SMD2727 components paired with bespoke Traffic Lens Optics.
- Directional Light Column: The integrated micro-lenses bend and focus the output beam directly onto the oncoming lanes, maximizing contrast and legibility at long distances while minimizing peripheral glare.
- Low-Voltage Power Topologies: Utilizing an efficient 4.5V dual-rail power rail managed by specialized driver ICs, the maximum module power draw is held to an economic ≤22W, vastly lowering long-term system OpEx.
The P10 & P16 Heavy-Duty DIP Gantry Portals
For environments prone to extreme seasonal temperature shifts and heavy roadside carbon exhaust, the classic P10 (DIP346) and P16 (DIP510) systems represent the mechanical baselines for overhead portals, providing deep long-range legibility and high structural durability.
3. Long-Span Crossings and High-Wind Corridors: Ultra-Large Pitch & Hollow Architectures
Bridges, elevated coastal bypasses, and mountainous passes experience continuous, severe wind-tunnel vectors. Massive, closed-back iron signs installed on these structures pose a severe structural collapse risk unless supported by millions of dollars in structural steel bracing.
The P20 Low-Resistance Hollow Platform
Where dead weight and overturning wind moments dictate the engineering brief, the P20 Hollow (mesh/strip type) configuration cuts through the air.
- Pneumatic Flow Design: The open-air, low-resistance strip design allows high-velocity winds to pass directly through the screen body, dropping the static and dynamic structural coefficient demands on the mounting frame.
- Low-Stress Thermal Curves: Operating on a 4.2V low-energy architecture drawing a nominal 20W per module, the structure relies entirely on natural air convection for heat dissipation, eliminating failure-prone mechanical cooling fans.
The P25, P31.25, P33.33, and P37.5 Mega-Pitch Signatures
When warning messages and standard regulatory pictograms (such as speed limits and construction alerts) must be interpreted from distances of 300 meters or greater, the pixel architecture transitions to dense multi-diode composite clusters.
- Multi-Diode Pixel Formats: Standard pixel layouts scale up from P20 (2R1G1B) and P25 (4R2G1B) up to the extreme P37.5 composite structure.
- The P37.5 Pentachromatic Light Matrix: Utilizing an advanced 4Red + 4Yellow + 3Green + 3Blue + 3White multi-diode cluster arrangement, the P37.5 is engineered for perfect chromatic rendering of official road-sign color palettes, satisfying highly specific regulatory compliance profiles for cross-regional mega-highways.
4. Comprehensive Engineering Parameter Matrix for Project Auditing
| Model Pitch & Technology | Core LED Component | Certified Brightness (cd/㎡) | Cabinet Material & Structural Weight | Primary Application Environment |
|---|---|---|---|---|
| P4 SMD Full-Color | SMD1921 | $\ge 10,000$ | Aluminum Alloy / $\le 40\text{ kg/㎡}$ | PIS Hubs, EN12966 Certified Urban VMS |
| P6 SMD All-In-One | SMD3535 | $7,500$ | Heavy-Duty Iron / $40\text{ kg/㎡}$ | ETC Lanes, Toll Booth Gate Control |
| P10 DIP Standard | DIP346 | $7,500$ | Structural Steel / Project-Dependent | Standard Roadside Informational Boards |
| P16 Traffic Lens | SMD2727 + Lens | $8,500$ (Focused) | Aluminum/Iron Configurable | Mid-Range Gantries, Energy-Critical Arterials |
| P16 DIP Heavy-Duty | DIP510 | $8,000$ | Structural Steel / Custom Formats | Standard Overhead Highway Portals |
| P20 Hollow Strip | SMD Matrix | $6,500$ | Lightweight Alloy / Ultra-Low Load | Cross-Sea Bridges, Coastal Elevated Ways |
| P20 / P25 Composite | DIP510 Clusters | $7,500 – 8,500$ | Heavy Gantry Frames / Custom | Mid-to-Long Range Regulatory Speed Signs |
| P31.25 / P33.33 Mega | DIP510 Clusters | $7,000 – 8,000$ | Open-Girdle Gantry Frames | Long-Range Interstate Lane Splits |
| P37.5 Pentachromatic | 4R4Y3G3B3W DIP | $6,000 – $7,500 | Open-Girdle Gantry / Heavy-Duty | High-Speed Highway Regulatory Pictograms |
