Road marking evaluation and measurement system
First Claim
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1. An apparatus for measuring at least one attribute of a road marking disposed on a road surface comprising:
- a vehicle configured for travel over the road surface;
a computer transported by the vehicle; and
a measurement system transported by the vehicle;
wherein the measurement system comprises a color measurement subsystem that;
measures the color of the road marking with reference to a standard color sample;
generates color measurement data based on the color measurement; and
communicates the color measurement data to the computer.
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Abstract
An apparatus for measuring attributes such as color, thickness and/or retro reflectivity of a road marking disposed on a road surface. The apparatus includes a vehicle that travels over the road surface. The vehicle transports a measurement system and a computer. The measurement system includes at least one subsystem, which may include a color measurement subsystem, a thickness measurement subsystem and/or a retro-reflectivity measurement subsystem. The computer receives the measurement information from the measurement system.
54 Citations
22 Claims
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1. An apparatus for measuring at least one attribute of a road marking disposed on a road surface comprising:
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a vehicle configured for travel over the road surface;
a computer transported by the vehicle; and
a measurement system transported by the vehicle;
wherein the measurement system comprises a color measurement subsystem that;
measures the color of the road marking with reference to a standard color sample;
generates color measurement data based on the color measurement; and
communicates the color measurement data to the computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for measuring at least one attribute of a road marking disposed on a road surface comprising:
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a vehicle configured for travel over the road surface;
a computer transported by the vehicle; and
a measurement system transported by the vehicle;
wherein the measurement system comprises a thickness measurement subsystem that;
measures the thickness of the road marking disposed on the road surface;
generates thickness measurement data; and
communicates the thickness measurement data to the computer. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for measuring a road marking parameter of a road marking that is disposed on a road surface, comprising:
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providing a vehicle that is operable to transport a road marking parameter measurement system, the measurement system comprising a laser line generator that is operable to project a laser line, and detector that is operable to measure a laser line reflection;
operating the vehicle so that the measurement system is moving relative to the road surface;
operating the measurement system to project laser line such that a first portion of the line is reflected off of the road marking at a first angle and second portion of the line is reflected off of the road surface adjacent to the road marking at a second angle;
detecting the reflected first and second portions of the line with the detector; and
determining a thickness of the road marking based on a difference of the first angle relative to the second angle. - View Dependent Claims (21, 22)
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Specification