ASTM E1710 Retroreflectance Testing for Pavement Markings
The ASTM E1710-18 test method is intended to be used for field measurement of pavement markings but may be used to measure the performance of materials on sample panels before placing the marking material in the field.
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- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
ASTM E1710 is the standard test technique for assessing the retroreflective characteristics of horizontal pavement markings, such as traffic lines, utilizing a portable retroreflectometer. This method is intended for field measurement of pavement markings, but may also be used to measure the performance of materials on sample panels before placing the marking material in the field.
Scope, Applications, and Benefits
Scope
ASTM E1710-18 focuses on determining the coefficient of retroreflected luminance (RL) of pavement markings under standardized geometry conditions. It ensures consistent and accurate field measurements.
The test evaluates:
- Retroreflectivity (RL) of pavement markings
- Nighttime visibility performance
- Effect of wear and aging
- Compliance with road safety standards
- Uniformity of markings
Applications
- Used by transportation agencies to verify compliance with performance requirements.
- Portable retroreflectometers allow on-site testing of pavement markings.
- Helps manufacturers and engineers assess different marking materials under real conditions before use.
- Retroreflectivity data from this method can be part of roadway safety assessments.
- Used to standardize performance benchmarks in contracts and technical specifications.
Benefits
- Helps ensure pavement markings are sufficiently visible at night or in low-light conditions.
- Provides a standardized method with defined geometry
- Designed for use with portable instruments that can be deployed directly on roads.
- Assists agencies and contractors in verifying retroreflective performance before and after installation.
- Higher measured retroreflectivity correlates with better visual recognition by drivers.
Testing Process
Instrument Setup
Power on and calibrate the portable retroreflectometer using reference standards.
1Site Preparation
Clean the pavement marking surface and position the instrument as per CEN geometry.
2Measurement
Measure retroreflected luminance at specified locations along the marking.
3Data Recording
Record and average readings to determine retro reflectivity values.
4Technical Specifications
| Parameter | Details |
|---|---|
| Test Method | Portable retroreflectometer |
| Measured Property | Retroreflectivity (RL) |
| Test Surface | Pavement markings |
| Surface Condition | Clean and dry |
| Calibration | Required before testing |
Instrumentation Used
- Portable retroreflectometer (CEN-prescribed geometry)
- Calibration reference standards
- Positioning and alignment aids
- Surface cleaning tools
- Data recording and analysis system
Results and Deliverables
- Retroreflectivity (RL) values are obtained in mcd/m²/lx.
- Results indicate the nighttime visibility performance of pavement markings.
- Higher RL values correspond to better light return to drivers.
- Multiple measurements provide a representative average for the marking.
- Results help identify degraded or worn markings requiring maintenance.
Frequently Asked Questions
ASTM E1710-18 is a standard test method used to measure retroreflectivity of pavement marking materials using a portable retroreflectometer with CEN-prescribed geometry under field conditions.
ASTM E1710-18 is important because it ensures pavement markings remain visible at night, helping drivers navigate safely and improving overall roadway safety and compliance with regulations.
ASTM E1710-18 measures light reflected from pavement markings at specified angles simulating vehicle headlights, determining how effectively markings return light to the driver’s eyes.
ASTM E1710-18 requires a portable retroreflectometer with defined geometry, calibration standards, and proper field setup to ensure accurate and repeatable measurements.
Results are reported as coefficient of retroreflection, typically in millicandelas per lux per square meter, indicating visibility performance and compliance with roadway safety standards.
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