Traffic Forecast

Road surfacing

The A22 is surfaced in special low-noise asphalt (DFAS). This combination of materials has been created to ensure greater safety and comfort on the motorway even during bad weather conditions. The only exceptions are tunnels, bridges and viaducts (extending over a total length of approximately 15 miles) which have been covered in an anti-skid surface for winter operations on the motorway.

MONITORING - The condition of the road surface plays a considerable role in relation to structural damage and the duration of its operational suitability. The use of technology to assess the fatigue properties of the road surface and therefore determine the integrity of the load-bearing structure is of vital importance. The evaluation of these critical parameters is used as a basis for the development of a method to determine the remaining useful life, to estimate the intervals for and scope of maintenance and replacement work, and finally to improve structural quality and the resulting long operational suitability of the road surface. The subsequent lower number of necessary road works will generate financial savings.   These objectives will be met by employing an automated vehicle counting system to replace manual methods, which will measure the roughness of the road surface by travelling at motorway speeds along a linear section of the route. An automated measurement system is less resource intensive and provides a greater quantity of useful data regarding roughness while considerably reducing any problems with regard to safety and traffic monitoring which arise as a result of manual surveys and analyses. The system includes various tasks, from the specific analysis of the affected section of the route to large projects, including predictive analysis, estimation of road renovations, renovation quality assurance, etc.

  • measurement of roughness for road surface management systems including any safety-relevant studies quality assurance
  • measurements for new road surfaces for the certification of contractual specifications for the construction of the road surface with reference to the limit values for the roughness and separation of the concrete aggregates detailed
  • measurements of the roughness and surface (wear, grooves, ...)
  • evenness along and across the road surface
  • faults with joints and cracks
  • summary of the surveys of joints and cracks in any one section of the road surface 
  • documentation of the newly concreted surface
  • faults in the road surface and examination of horizontal marks

In traffic engineering, the term “de-icing” refers to the act of preventing snow and ice adhering to the road surface. The snow clearing team scatter a de-icing agent on the asphalt prior to any expected heavy snowfall or if the surface reaches the freezing point of any liquid. If de-icing is necessary, a road weather information system is used which measures the temperature of the road surface and other meteorological and climatic conditions (wind, humidity, precipitation, etc.). However, such measurement stations may only be positioned at variable points a considerable distance from one another.

A better assessment can be obtained from an almost blanket coverage and the mapping of temperatures along the entire length of the route. Such imaging includes the collection of data about the temperature of the road surface in relation to its geographical location.  This form of data presentation provides a thermal profile of a particular section of road based on a geographical determination. Road maintenance winter service staff are able to use this data to identify locations on the temperature map where temperatures lie below the critical limit thus indicating that these areas are more likely to develop a layer of ice and they are therefore able to decide whether they should apply chemical agents.

Based on the aforementioned facts, Autostrada del Brennero SPA has developed a mobile monitoring system for installation in highway maintenance vehicles (belonging to the road management service). This system is fitted with a data acquisition unit (non-contact IT sensors, GPS, GPRS, etc.) which captures, processes and transmits the temperature data in real time to a central server where a temperature map of the recorded road surface temperatures is created in a geographical information system (GIS). 
Fahrzeuge mit zwei Achsen (Auto, Motorrad) Fahrzeuge mit 2 Achsen und Höhe >1,3 m. Fahrzeuge mit 3 Achsen (Bus, Auto mit Anhänger) Fahrzeuge mit 4 Achsen (Auto mit Wohnwagen) Fahrzeuge mit 5 Achsen (Lkw)  
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The videowall of the A22 User Assistance Centre (UAC)
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Accident incident rate
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The A22 motorway, the Green Corridor and the Report on the European Smart Land
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