| 1. |
- Eliasson, Jonas, et al.
(författare)
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The Stockholm Congestion-Charging Trial 2006 : Overview of the effects
- 2009
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Ingår i: Transportation Research Part A. - Amsterdam : Elsevier BV. - 0965-8564 .- 1879-2375. ; 43:3, s. 240-250
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Tidskriftsartikel (refereegranskat)abstract
- The Stockholm congestion charging trial in 2006 demonstrated the effects of a full-scale time-differentiated urban road toll scheme. Improvements in travel times were large enough to be perceived by the general public. This was pivotal to the radical change of public attitudes that occurred during the trial and that resulted in a positive outcome of a subsequent referendum on a proposal for making the system permanent. This paper summarises the effects of the trial and analyses to what extent targets were met. Effects on congestion reduction were larger than anticipated, which also resulted in favourable economic and environmental effects. The trial showed that a single-cordon toll could affect traffic within a large area, i.e., not just close to the zone limits.
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| 3. |
- Warmlander, Sebastian K. T. S., et al.
(författare)
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Amulets rather than iron bars. Metallographic analysis indicates uneven material quality in Vendel Period iron rings from Aselby in Stora Tuna parish, Dalecarlia
- 2018
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Ingår i: Fornvännen. - : Royal Academy Letters, History & Antiquities. - 0015-7813 .- 1404-9430. ; 113:1, s. 1-6
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Tidskriftsartikel (refereegranskat)abstract
- 29 iron rings with diameters between 9 and 15 cm were excavated in 1989 at a Vendel Period settlement site with a longhouse, located at Aselby in Dalecarlia, Sweden. Most of the rings had between one and three smaller rings attached. Rings of this type and size are fairly common at Scandinavian Vendel and Viking Period sites - settlements, cemeteries and cult precincts - but their function remains debated. The rings from Aselby have been interpreted as iron/steel bars, to be used or traded as raw material for e.g. weapons production. Previous metallurgical analysis of one Aselby ring showed it to consist of somewhat uneven but still decent-quality carbon steel. General conclusions should however not be drawn from a single observation. Here, we have sampled six Aselby rings for metallographic examination of the cross-sections. The material quality and carbon content of the sampled rings were found to be very uneven, and relatively large inclusions of unworked slag were common. We conclude that the rings were not bars of raw material. Instead, they may have been amulet rings, intended for ritual use. If so, our results suggest that the material properties of amulet rings may have been less important during rituals it may have sufficed that the rings had the right shape.
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