Lasers have rather broad use of highway infrastructure in this age of development. It is used for different purposes such as path profiling, deflection of the pavement board, deflection of the bridge, Speed checkers, etc. Such methods simplified human activity by keeping it quick and convenient to use.
This has better precision relative to older methods that were tedious because it is automatic and quicker in achieving tests as everything is measured by a computer and needs far little human resources.
Advantages of Lasers in Highway Engineering
- The laser-based devices can reliably calculate road profile and deflection while driving at regular speed.
- It results in the fast calculation and data collection.
- It can work at speeds of 105 km/h.
- It collects data in real-time as it traverses the top of the pavement.
- During the research, it removes the need for lane restrictions or traffic management.
- A single instrument position may be used to calculate different positions.
- It requires no setups or breakdowns.
- This can be installed on any automobile that the customer wants.
What are the uses of lasers in the field of Highway Engineering?
Laser applications in highway infrastructure include path profiling, deflection of the concrete sheet, deflection of the bridge, speed checkers, etc.
What is the use of lasers in the speed detection of vehicles?
The road speed checker is useful for the traffic police, especially against speed limit violators as it offers the digital monitor as well as buzzing sound or warning to identify the vehicle speed if the vehicle reaches the speed limit required.
Applications of Lasers in Highway Engineering
- Road Profiling
- Pavement Surface Deflections
- Bridge Deflection
- Speed Checkers
1. Road Profiling: The profile of a path is calculated around some inexistent line or point that is permanent. In addition to rutting and other issues, the profile of a path taken along a lateral line shows the over altitude and crown of the route outline. The longitudinal profile displays the ruggedness, hardness, and grade of the material.
- To track the status of a pavement management system road network (PMS) network.
- To determine the existence of freshly built or reparated environments.
- To evaluate the condition of a specific position and agree on effective therapies and,
- To examine the status of a single test location. At the other side, an inspection method can provide unceasing projections of destinations that are just a few hundred feet wide, in order to distinguish unobtrusive forms of decline at the onset.
2.Pavement Surface Deflections:
Pavement surface deflection is measured using :
Rolling Wheel Deflectometer: Applied Research Associates (ARA), Inc. created the rolling wheel deflectometer to measure pavement surface diversions at traffic speeds and to represent the heap conveying maximum of in-administration pavements. This device consists of a 53 ft long semitrailer that adds a regular 18,000-lb load to the pavement system by way of compact double tire crossing the single back pivot together.
Working Spatially-Coincident Method: The RWD tests wheel diversions on the pavement surface by method for a spatially accidental procedure, which investigates the surface profiles in both undeflected and avoided situations. When the RWD passes on top of the ground, lasers for triangulation installed on a 25.5-ft aluminum shaft and positioned at interim 8-ft are used to assess surface avoidance.
To identify the empty area, three spot lasers are positioned before the stacked wheel and one spot laser is specifically placed on top of the double-stacked tire to get together to gage the diverting object. The laser sensors are placed to collect a reading at all truck speeds at a negotiated intermediate of 0.6 in.
3.Bridge Deflection: Bridge deformation is induced by shifts in geological environments, including long-term loading including overloading. Measuring the deformation is necessary to know the bridge’s safety, to ensure its healthy usage.
To quantify deformation, with the advancement of computing technology, sensor technology, and network technologies, modern methods of deformation measurement such as extended cable, tilt-meter, GPS, optical fiber, laser signal. These approaches may realize on-line real-time and automated bridge deflection calculation, which is small in cost of repair and high accuracy.
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As seen in the figure below, the deflection measuring device is composed of laser emitter, laser receiver, and upper computer. The laser beam will provide long-term reliability, anti-interference, and high precision of positioning to guarantee the spot center’s precise positioning.
4.Speed Checkers: The measurement of vehicle speed is important for enforcing the rule on speed restriction and it also shows traffic situation. The vehicle’s speed is more dangerous than the specified limit which creates the chance of accidents.
The ITS (Intelligent Transportation System) is a modern solution to traffic vehicle management. Because of their benefits including saving a life, energy, and time these systems are becoming more important.
Lasers have been used to monitor the vehicle’s speed to minimize dangerous road accidents. The road speed checker is useful for the traffic police, especially against speed limit violators as it offers the digital monitor as well as buzzing sound or warning to identify the vehicle speed if the vehicle reaches the speed limit required.
In this era of technology, Lasers have a very vast application in Highway Engineering. It is used various purposes like Road profiling, Pavement surface deflection, Bridge deflection, Speed checkers, etc. These techniques have eased Human work by making it simple and easy to use. In this article, we’ve covered the upsides and advantages of Lasers in Highway Engineering. Hope this article helped you.
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