Road Assessment for State Authorities

Statewide road network collection using PaveScout technology

RPS can provide a comprehensive assessment of your entire road network using our PaveScout platform to collect surface, subsurface and environmental image data.

Once collected this data is processed to produce rutting, roughness, texture depth and environmental camera images automatically aligned to your existing maps either based on chainage, sections or geospatially.

For state road authorities there is a greater focus on quantitative measures, primarily due to vast distances of road that a single entity has to maintain. For this reason data consistency is extremely important.

As with councils the rutting, roughness and texture depth measures are often key elements that need to be measured. The PaveScout technology allows this to be done at minimal cost. We also augment these measures with our auto-alignment systems to reduce data alignment errors, and finally we can use technologies such as RoadLock to align a vehicle within a lane. The result is higher accuracy data, making the true change in the road network clearer.

RPS also captures other distress measures. The most economically advantageous element is the Photometric imaging system. Cracking data is a notoriously difficult to track with time when collected by a conventional environment camera system. This is not related to the training of personal, but instead a direct consequence of the inconsistent lighting (the sun - both in intensity and angle) in the images. Consequently asset camera maps normally cannot be tracked over time with much accuracy. The best that can be done is to flag when the cracking is particularly high.

The detailed crack maps produced by the RPS Photometric imaging system are different. No other system produces detailed topography maps of the road surface to this degree, free from the usual marks on a road. As it is collected with artificial lighting, the results are consistent, especially when combined with automatic calculation of cracking statistics. The result is a consistent crack map that can be compared over time.

The other important feature of the system is the size of the cracks that it can detect. Unlike with windscreen surveys, environmental cameras, or lower resolution artificial lighting system, this system can detect very small cracks. The Photometric imaging often detects the "precursors" to cracking, such as the formation of ripples or platelets within the surface. As a result you can get to cracks much earlier, with crack sealing, extended pavement life by reducing the damage to the road base.

While this may all seem difficult, at RPS the key is data simplicity. While the raw data is highly detailed, the resultant measures that are obtained from this are very light, allowing easy management by exporting to a pavement management system or exporting into geospatial forms.

Unsealed Road Assessments

For unsealed roads, while the Photometric system can be used, this high resolution data is often too detailed. Instead, RPS utilizes the laser and environmental cameras, in combination with our high precision positioning system to determine road condition. In this case the Photometric system automatically rolls up to prevent damage to the lighting system.

Due to the high intensity and accurate positioning of the laser profiling system, RPS is able to produce an accurate profile of a dirt road. When combined with the GPS/IMU position, it is possible to determine standard measure such as rutting and roughness, but also extended measures related to cross-fall (which related to poor drainage) and texture measures. Finally the environmental cameras provide video evidence of road state, as required in many road maintenance contracts.

Clients we have worked with

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