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RP-MR11 Vehicle-Mounted Pavement Marking Retroreflection Measurement System

Road markings are the “language” of highways, serving as a direct interface with road users and an essential facility for conveying standardized information and facilitating traffic flow. They play a critical role in enhancing highway capacity and improving driving conditions, and are widely employed throughout China’s road transportation sector. Among the various technical parameters of road markings, the retroreflective luminance coefficient (RL) is the most important indicator, directly reflecting the visibility performance of the markings. The vehicle-mounted retroreflectivity measurement system consists primarily of a host unit (including an optical measurement system and BeiDou/GPS positioning antennas), a computer processing system, and a human–machine interface (HMI). It enables the assessment of the retroreflective luminance coefficient of all pavement markings under normal driving conditions without closing the roadway, offering advantages such as high testing efficiency, comprehensive sample coverage, and a safe testing environment. Additionally, it provides panoramic imagery of the road marking condition, and its data can be used to generate maintenance maps for road markings. This system addresses the limitations of traditional retroreflectivity testers—namely, labor‑intensive operation, low efficiency, insufficient sample coverage, and unsafe testing environments—making it an indispensable tool for construction firms, inspection agencies, and maintenance organizations to ensure marking quality. Operating principle: The geometric configuration of the vehicle‑mounted retroreflectivity measurement system simulates the scenario in which a vehicle’s headlights illuminate pavement markings made of retroreflective material located 30 meters ahead on the roadway at night. The brightness observed by the driver inside the cab corresponds to the reflected light. A schematic diagram of the optical path is shown below.

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Traffic Sign and Marking Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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RP-MR11 Vehicle-Mounted Pavement Marking Retroreflection Measurement System

Description

Product Introduction:

Road markings are the “language” of highways, serving as a direct interface with road users and functioning as one of the key facilities for conveying standardized information and facilitating traffic flow. They play a crucial role in enhancing highway capacity and improving driving conditions, and are widely employed throughout China’s road transportation network. Among the various technical parameters of road markings, the retroreflective luminance coefficient (RL) is the most critical indicator, directly reflecting the visibility performance of the markings.

The vehicle-mounted pavement marking retroreflectivity measurement system primarily comprises a host unit (including the optical measurement system and BeiDou/GPS positioning antenna), a computer processing system, and a human–machine interface (HMI). It enables the assessment of the retroreflective luminance coefficient of all pavement markings under normal driving conditions without road closures. The system offers high testing efficiency, comprehensive sample coverage, and safe operating conditions, while also providing panoramic imagery of pavement marking conditions. Its data can be used to generate pavement marking maintenance maps, addressing the limitations of conventional retroreflectivity testers—namely, labor‑intensive operation, low efficiency, insufficient sample coverage, and unsafe testing environments. As such, it serves as an essential tool for construction firms, inspection agencies, and maintenance organizations to ensure pavement marking quality.

Working principle

The geometric configuration of the vehicle-mounted pavement marking retroreflectivity measurement system simulates the scenario in which a vehicle travels on a highway at night: the headlamps illuminate a pavement marking made of retroreflective material located 30 meters ahead, and the driver inside the cab observes the luminance of the reflected light. The optical path is illustrated in the figure below.

Compliant with standards

JJF 1809-2020 “Calibration Specification for Retroreflectometers”

GB/T 26377-2010 “Retroreflectometer”

JJG (Transportation) 059-2004 “Verification Procedure for Retroreflectometers”

ASTM E2177RL “Standard Test Method for the Retroreflectance Coefficient of Road Markings”

ASTM E1710 “Standard Test Method for Measuring the Reflectance of Pavement Marking Materials with Geometric Shapes Specified by CEN Using a Portable Retroreflectometer”

EN 1436 “Road marking materials — Performance of road markings for road users”

Technical Specifications:

Detection Channel	Single-channel/Dual-channel (customizable)
Simulated detection distance	30m
Distance to the object being measured	6m
Horizontal measurement width	1200mm
Longitudinal measurement dimension	500mm
Light source	Infrared laser
Measuring speed	260 frames/s
Measurement interval	<100mm
Angle of incidence	88.76°±0.01°(ASTME1710)
Angle of incidence	1.24°±0.01°(EN 1436)
Observation Angle	1.05°±0.01°(ASTME1710)
Observation Angle	2.29°±0.01°(EN 1436)
RL measurement range	0~2000 mcd/(m² · I×)
Data repeatability	<5%
Indication error	<10%
Light source lifespan	>10,000 hours
System	Win10

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RP-MR11 Vehicle-Mounted Pavement Marking Retroreflection Measurement System

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Address:Tianjin Jinghai Economic Development Zone

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