Två studier av kostnader för upphandlade asfaltbeläggningar


This report presents the results of two studies that analyze the costs of the Swedish Transport Administration’s (Trafikverket) tendered contracts for road pavements. Trafikverket provided two different sources of information about the pavement orders/contracts. The first is VUH database containing more than 20 000 registered and completed orders from the years 2001 to 2011. The second is a compilation of 285 contracts for replacement pavements, i.e. reinvestment in the form of new pavement on longer stretches of road, tendered in 2012 and 2013. The first study analyzes a subset of observations from the VUH database for the most frequent combinations of type and variety separately and for all observations. The results show that the price of bitumen has a strong impact on the cost of pavements: An increase in bitumen price by 10 percent, increases the price of pavements between 1.2 and 3.7 percent. There is some evidence of economies of scale in operations. The cost of pavements, thus increases by between 7 and 10 percent when the size of orders (in tons) increase by 10 percent. Competition measured as the number of active operators in the region during the year, has no significant effect. With some variation, the region of Skåne has lower and the region North region higher costs than other regions. The second demonstrates that cost increase by nearly six percent if the size (in square meters) of a contract increases by 10 percent. There are thus economies of scale to increase in size measured as area. The size of a contract may also be measured as the number of orders in each contract. The analysis indicates that the cost increases with the number of orders. That means that even though there may be economies of scale associated with the procurement of replacement pavements that are large as measured by the pavement are, there may still be reasons not to combine too many orders in one contract. One explanation may be that the distance between the component parts of the overall contract is too long.



Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.



Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.



The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...


New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...