Road surface deficiencies and texture have been evaluated with a variety of test methods. In recent years, laser profilometer data has been used in optimizing and to estimate pavement roughness parameters such as rut depth and texture.
What Is Laser Profilometer Data?
The use of non-contact measurements, such as ultrasonic and laser, can significantly speed up the pavement measurement process, thus facilitating the overall management of network assets.
Laser profilometers measure the cross section of the road and then convert the optical data into rut depth, surface structure and other pavement parameters.
This report focuses on the evaluation of three pavement parameters using laser profilometers, namely roughness, ruts and texture.
Main Roads WA has specific requirements for measuring surface shape using a straightedge and wedge, while Aust roads do not have an equivalent test procedure.
Specifications Of Laser Profilometer Data
Highway Development and Management (HDM) technology defines rutting as a permanent and unrecoverable deformation associated with a traffic load.
If this happens on a bike path, the rut builds up over time and can affect the function of the road surface.
Apparent rutting can be caused by several factors, including material strength, surface wear, or structural characteristics of the coating system.
In the case of heavy rutting or shear, this structural information can be related to the strength of the pavement.
Surface Texture
The texture or texture depth of the road surface is the main factor influencing the surface friction of the tires, resulting in proper vehicle handling.
Price Of Laser Profilometer Data
Figure 1.2 shows the relative magnitude of surface texture and its effect on pavement performance.
The area of contact with the tire is usually assumed to be 100 mm.
The condition of the road surface greatly influences the slip resistance between the tire and the surface and is therefore an important factor in roadworthiness.
Tire surface friction is one of the key elements of vehicle control, and the loss of this friction creates a potential risk of crashes and skids.
Previous studies and international experience have shown a strong relationship between the number of road traffic accidents and poor road surface texture.
Interesting Tips About Buying Laser Profilometer Data
This measurement must be processed by an algorithm that simulates the reference vehicle's response to roughness input and then accumulates the suspension travel.
Therefore, the IRI is calculated using the quadruple vehicle mathematical model response accumulation.
Rutting
Aust roads (2018) defines track depth as the maximum vertical lateral deviation of a road surface.
This can be measured either by the cycle path or by the width of the roadway.
The rut depth is measured from a reference point chosen perpendicular to the shoulder.
The longitudinal deviation of an asphalt pavement is known as rutting, and it usually occurs under any bike path.