LTL-3000 Retroreflectometer

LTL-3000 Retroreflectometer — Road Marking Luminance Measurement

The LTL-3000 Retroreflectometer is used to measure the retroreflectivity (mcd/m²/lux) of road markings, lane lines, and reflective studs as per EN 1436, ASTM E1710, and IRC SP:35. High retroreflectivity ensures that road markings are visible to drivers at night and in wet weather conditions — a critical safety parameter for expressways and national highways.

JS Civil Lab Solutions supplies the LTL-3000 for road safety audits, NHAI quality verification, PWD inspections, and road marking contractors.

Technical Specifications

• Geometry: 30 m observation distance simulation (EN 1436 geometry)
• Measurement range: 0–1,500 mcd/m²/lux
• Accuracy: ±5% (traceable calibration)
• Measurement area: ~110 cm²
• Response time: < 1 second per reading
• Display: Digital LCD with USB data transfer
• Standards: EN 1436, ASTM E1710, IRC SP:35

Acceptance Criteria (IRC SP:35)

For freshly applied white thermoplastic markings on national highways: RL ≥ 300 mcd/m²/lux (wet night). Minimum in-service value after 1 year: 100 mcd/m²/lux. The LTL-3000 enables rapid spot-check surveys to verify compliance.

Enquire

Contact JS Civil Lab Solutions at +91 93596 24761 for pricing and delivery. Traceable calibration certificate included with each instrument.