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Geostängslade BK4-transporter vid bropassager och på tjälade vägar
RISE Research Institutes of Sweden, Digital Systems, Mobility and Systems.ORCID iD: 0000-0002-8883-0804
Skogforsk, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Mobility and Systems.ORCID iD: 0000-0001-8452-0430
RISE Research Institutes of Sweden, Digital Systems, Mobility and Systems.ORCID iD: 0009-0005-9171-5152
2023 (Swedish)Report (Other academic)
Abstract [en]

Geofenced heavy trucks to protect bridges at crossings allowing higher weight on frozen roads Winter is our friend. When the road body is deep frozen it can handle more weight than during the rest of the year. However, the bridges are not affected by the cold weather, and they are therefore still vulnerable to increased loads. How can we allow increased loads on frozen roads while ensuring protection of the bridges? In this report, we share our insights from a project with the idea of using geofencing to protect the bridges. The geofencing technology ensures that the truck drives at a lower speed over the bridge and the bridge can withstand loads up to 74 tons since decreased speed reduces dynamic loads. If the road keeper can get guarantees that all heavy trucks drive at a low speed over the bridge, heavier traffic can be accommodated. This technology would of course also be beneficial to use across bridges in Europe regardless of the climate. ' The project “Frozen roads and 74 tons”, paid by the Swedish Transport Administration, consisted of three parts. One part was a pilot study during winter 22/23 demonstrating trucks from AB Volvo and Scania loaded with 74 tons using geofencing when the trucks passed over weak bridges. A speed limit, i.e. 50 km/h, was imposed in a zone around each bridge, whose coordinates were stored in the digital map accessible through the trucks’ Fleet Management System. Two different geofencing technologies were tested: on the one hand Scania’s system with “active” geofencing, where the truck was programmed to maintain the allowed speed over the bridge and calculated and implemented this itself (the driver could, however, override this by pushing the gas pedal to the floor); on the other hand AB Volvo’s system with “passive” geofencing, where the driver received a warning message when approaching the zone and would then slow down if necessary. The drivers were interviewed before and after the pilot about their experience. The results from the pilot showed that if the technology is verified, the truck will do the right thing and is on the right road network when the technology is activated. The drivers also liked geofencing. Geofences thus work in practice. The second part of the project was about quantifying the societal benefits of using geofencing. More efficient planning, control and follow-up can lower costs, reduce environmental impact, and increase traffic safety. Calculations in the project show that about 12 percent of timber transports in Norrland use frozen roads. They can benefit from the technology and if the technology is introduced, the industry would make savings of the equivalent of SEK 15 million / year and reduced energy use equivalent to 280 cubic meter diesel. At national level, this corresponds to an energy efficiency potential of 0.12 percent. The third part of the project was about policy and regulation. Can we use the current legislation, or do we need new legislation to scale the use of geofencing across bridges? How can we ensure compliance? How can we share data? How can we handle EU trade barriers? In the report, we have suggestions for policy and legislation to implement the geofencing technology to protect sensitive bridges. Our analysis shows that it is possible with today's regulations for an authority to introduce regulations on geofences. Such rules should preferably be based on functional requirements and a system of self-monitoring.

Place, publisher, year, edition, pages
2023. , p. 53
Series
RISE Rapport ; 2023:87
Keywords [en]
intelligent access, abnormal vehicles, high capacity transport, geofencing, bridges, frozen roads, timber transports, forest industry, transport efficiency, policy lab, regulatory sandbox
National Category
Agricultural Science, Forestry and Fisheries
Identifiers
URN: urn:nbn:se:ri:diva-67467ISBN: 978-91-89821-60-6 (electronic)OAI: oai:DiVA.org:ri-67467DiVA, id: diva2:1801539
Available from: 2023-10-02 Created: 2023-10-02 Last updated: 2023-10-02Bibliographically approved

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Andersson, KristinaLundahl, JennyEriksson, Anna

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