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RP-R18 Rainy Night Pavement Marking Retroreflectometer

The RP‑R18 pavement marking retroreflectance meter is a portable, open‑optical‑path field instrument used to measure the retroreflective luminance coefficient of pavement markings. Units: mcd·m⁻²·lx⁻¹. Its key feature is that it simulates the nighttime driving conditions of motor vehicles on roads: headlamps illuminate pavement markings made of retroreflective materials, and the reflected light is observed by the driver inside the cab. The measured parameter is the nighttime retroreflective luminance coefficient, denoted as RL. This instrument can determine the retroreflective luminance coefficient under three conditions: dry R_L, wet R_(L_wet), and continuous rainfall R_(L_rain).

Category:

Traffic Sign and Marking Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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RP-R18 Rainy Night Pavement Marking Retroreflectometer

Description

Product Introduction:

The RP‑R18 pavement marking retroreflectometer is a portable, open‑optical‑path field instrument used to measure the retroreflective luminance coefficient of pavement markings. Unit: mcd·m. ^-2 ·lx ^-1 Its primary research feature is simulating the nighttime operation of motor vehicles on public roads: the headlamps illuminate road markings made of retroreflective materials, and the brightness observed by the driver inside the cab is measured. The key parameter assessed is the nighttime retroreflective luminance coefficient, denoted as the RL value. This instrument can measure the retroreflective luminance coefficients of road markings under three conditions: dry (R_L), wet (R_(L_wet)), and continuously rainy (R_(L_rain)). It complies with the following standards: GB/T 26377-2010 “Retroreflectometer,” GB/T 16311-2009 “Quality Requirements and Test Methods for Road Traffic Markings,” JJG (Transportation) 059-2004 “Verification Procedure for Retroreflectometers,” as well as supporting JTG F80-1-2017 “Standard for Quality Inspection and Evaluation of Highway Engineering,” DB36/T 978-2017 “Quality Requirements and Test Methods for Rain‑Night Road Traffic Reflective Markings,” and DB51/T 2429-2017 “Quality Requirements and Test Methods for Rain‑Night Highway Traffic Reflective Markings,” among others.

Product Features:

Open light source, unaffected by external light during measurement.

Supports measurements under dry, humid, and continuous rainfall conditions;

Fast measurement (measures the retroreflective luminance coefficient within 1.5 seconds);

Simple calibration procedure; ceramic calibration block;

Ultra-long standby time, and supports fast charging;

5-inch sunlight-readable display; the operating interface remains clearly visible even in bright light.

Supports storage of more than 100,000 test records, including measurement data, operator information, road segment details, and test timestamps.

USB data interface; test reports are exported to a computer in database format.

Real-time voice broadcasting of measurement data;

The Bluetooth printer prints the test results on-site.

Real-time sampling, storage, and real-time display of on-site temperature and humidity;

Technical Specifications:

Name	Technical indicators
Measurement items	Retroreflective luminance coefficient mcd·m⁻²·lx⁻¹
Measurement range	0-4000
Viewing angle	1.05°
Angle of incidence	88.76°, with a complementary angle of 1.24°
Light source color temperature	2856±50K
Repeatability measurement error	≤2%
Battery runtime	> 30h
Data storage space	More than 100,000 test data records
Voltage capacitor	12V/5.2Ah
Charging power supply	DC 15V
Ambient operating temperature	-15℃~+60℃
Operating ambient humidity	<98%, frost-free
Overall machine volume	700mm x 140mm x 140mm
Net weight	6kg

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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RP-R18 Rainy Night Pavement Marking Retroreflectometer

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Address:Tianjin Jinghai Economic Development Zone

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