Why cable-fed LED road studs?

Tunnels, covered underpasses and north-facing cuts often receive little or no sunlight. In such environments, solar charging is unreliable. A 12/24V cable solution ensures continuous operation, predictable brightness and easy integration with central traffic control systems.

• Power stability for continuous or high-duty lighting.
• Centralized PLC control for synchronized and adaptive patterns.
• Easy integration with traffic signals (3-color coordination).

Five Intelligent Lighting Modes

Designed for flexibility — operators can switch modes on-site or via PLC scheduling:

1. Synchronization Flashing — all studs flash in perfect sync for strong visual cohesion.
2. Sequence Flashing — progressive chasing pattern to indicate direction or lane flow.
3. Slow Synchronization Flashing — slower synced flash for caution zones.
4. Normal Flashing — standard warning pulses for typical hazard marking.
5. Steady Lighting — constant light for continuous edge delimitation (preferred for bike/pedestrian guidance).

Traffic Signal Integration & PLC Control

PLC control enables:

• Time-based schedules (night/day, peak/off-peak).
• Remote mode switching and firmware updates.
• 3-color coordination with traffic signals (R/Y/G), useful for temporary lane control, work zones, or variable message systems.
• Diagnostics reporting (light status, LED failure, short/open circuit feedback) when combined with smart controller systems.

Why the LS-68 cable version is ideal for tunnels & chevrons

• Guaranteed power: no dependence on sunlight—stable brightness throughout operations.
• High visibility: 28 LEDs provide excellent luminance at low mounting heights and shallow viewing angles.
• Robustness: inherits LS-68 mechanical strength and sealing for long service life in grit, moisture and vibration environments.
• System integration: PLC and traffic-signal compatibility let traffic engineers coordinate lighting with other ITS elements.

Typical Use Cases

• Tunnel lane delineation and incident warning
• Chevron curves & steep bends with limited daylight
• Underpasses, covered walkways and shaded highways
• Work zones, temporary diversions and gated facilities

Installation & Power Considerations

Key installation tips:

• Use appropriate low-voltage cabling rated for the environment (12/24V DC trunk lines with local drops per stud).
• Implement a central PLC controller in the controller cabinet with surge protection and backup power if required.
• Plan cable routes to minimize cuts, protect against rodent damage, and allow for easy maintenance access.
• For retrofit projects, evaluate trenching vs. surface-mounted protected conduit solutions to reduce installation cost.

Performance & Reliability

The LS-68 cable variant is engineered for continuous duty in demanding environments. Typical benefits include:

• Stable lumen output under mains-fed power
• Long LED life (>50,000 hours depending on drive current)
• Robust mechanical life and IP-rated protection when specified

Ordering & Customization

Lubao Smart Traffic offers:

• Custom color & LED intensity options
• PLC programming and scene presets
• 3-color signal interface modules for direct integration
• Bulk order pricing, sample units and technical support

Want a sample or system demo? Contact us for sample units, wiring diagrams and PLC programming templates to test in your tunnel or chevron project.