LTL-3500 Retroreflectometer for High-Speed Road Marking Measurement

LTL-3500 Retroreflectometer — Advanced Road Marking Measurement

The LTL-3500 is an advanced handheld retroreflectometer for measuring the retroreflectivity of road markings under both dry and wet conditions as per EN 1436, ASTM E1710, and IRC SP:35. In addition to standard dry RL measurement, the LTL-3500 includes a built-in water spray system to simulate wet-night visibility — a critical safety parameter on expressways where wet-weather accidents are disproportionately high.

JS Civil Lab Solutions supplies the LTL-3500 for highway quality assurance teams, road marking contractors, and NHAI inspection agencies needing wet-condition measurement capability beyond the standard LTL-3000.

Technical Specifications

• Geometry: 30 m simulation (EN 1436 standard geometry)
• Dry RL range: 0–1,500 mcd/m²/lux
• Wet RL measurement: Integrated spray nozzle, instant wet reading
• Accuracy: ±5% (traceable calibration)
• Display: Digital LCD with USB connectivity
• Compliance: EN 1436 (RL, RW, Qd), ASTM E1710, IRC SP:35

LTL-3500 vs LTL-3000

The LTL-3000 measures dry retroreflectivity (RL) only. The LTL-3500 adds wet retroreflectivity (RW) measurement via integrated water spray, making it the preferred instrument for projects requiring EN 1436 RW compliance — including airport runways, expressways, and tunnels.

Enquire

Contact JS Civil Lab Solutions at +91 93596 24761 for pricing and calibration documentation.