Johan Nyström


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Research results from Johan


Erfarenheter av privat finansiering av offentlig infrastruktur

A government committee has asked VTI to give an account of domestic and international experiences of private funding of public infrastructure investment under the Public Private Partnership (PPP) format. This report is based on a literature review...

Degrees of freedom and innovations in construction contracts

DB (Design and build) and DBB (Design-bid-build) represent two different contracting forms in construction. The first provides the contractor degrees of freedom in design, which enables innovation. DBB is the safe and traditional contracting form,...

Stimulera konkurrensen i anläggningssektorn: hur behandlas små och medelstora företag i...

The Swedish market for road construction and maintenance is often described as having a problem with sufficient competition. Similar countries have more dynamic markets with an adequate number of bidders on each contract, the argument goes. However,...

The balance of unbalanced bidding

Based on anecdotal evidence, claims are made that unbalanced bidding is a serious problem in the construction industry. This concept is based on a situation with a contractor being more informed than the client. The asymmetry in information can be...

Den svenska fordonsbesiktningen: regleringens existensberättigande och välfärdseffekter...

Den 1 juni 2010 reformerades marknaden för fordonsbesiktningen genom att privata företag tilläts erbjuda dessa tjänster. Tre år efter reformen kan det konstateras att inte mycket har förändrats på marknaden, att det saknas en strukturerad...

Degrees of freedom in road construction

One policy that is believed to increase the rate of innovation and the level of productivity is to move from Design-bid-build contracts (DBB) to Design-Build contracts (DB). A common view is that the latter provides the contractor more degrees of...

Mapping railways maintenance contracts: the case of Netherlands, Finland and UK

In 1988, Sweden was the first country in Europe to separate the ownership of railway infrastructure from traffic operations. Starting in 2002, maintenance has gradually been contracted out. Sweden, Finland and Holland – and previously England – have...

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...

Beyond terminology: which contracting features promote innovation

Two opposing contracting forms in construction are DB (Design and build) and DBB (Design - bid - build).  The  first  one  provides  the  contractor  degrees  of  freedom  in  design,  which  enables innovation. DBB is the safe and traditional...

Regelförändringar i transportsektorn – effekter av omregleringar inom inrikesflyg, taxi,...

Konkurrensverket (the Swedish Competition Authority) has commissioned the Swedish National Road and Transport Research Institute (VTI) to provide an overview of the consequences of four regulatory reforms in the transport sector during the past 20...

Too much balance in unbalanced bidding

This article adds to the theoretical base of unbalanced bidding in auction theory. The importance of this concept is justified by being a decisive feature in the make-or-buy decision of a client who cannot rely on repeated interaction, often the...

Godstransporter och samhällsekonomiska kalkyler

The latest winters have caused problems for freight transport in Sweden. The subsequent discussion is about how well the freight transport is captured in the socioeconomic calculations, i.e. within cost-benefit analysis (CBA) of infrastructure...

Produktivitetsstudie: kvalitetssäkring av Trafikverkets egna kostnadsdata gällande drift...

Trafikverket (The Swedish Transport Administration) has been criticized for not systematically following up their productivity. This report is an initial study of the possibility to report productivity regarding maintenance on an aggregate level....

Före och efter: uppföljning av en järnvägsinvestering i Oslo

VTI has been commissioned to make an ex post evaluation of a new double track between Asker and Sandvika to the southwest of Oslo. This is one out of three parcels in a package of railway investments in this area. The decision to implement the...

På spaning efter den innovativa myndigheten

This report makes suggestions for how the government can improve on the monitoring of its agencies and the productivity of its activities. The instrument for doing so is to ascertain a regular review of costs in the contract signed between...

Vart tar pengarna vägen?: om behovet av bättre uppföljning för ökad effektivitet i...

It is possible to enhance the cost effectiveness of infrastructure investments in the public sector. In this VTI report it is also stated that the costs for implementing a system which would facilitate the identification of successes and failures...

Strategi för utveckling av en samhällsekonomisk analysmodell för drift, underhåll och...

The ability to make structured decisions about the optimal funding for operation, maintenance and renewal of roads and railways is currently limited. This creates significant risks that the funds are used in an inefficient manner. It is therefore...

Why are bids not more unbalanced?

Earlier theoretical models of unbalanced bidding in unit price contracts (UPC) ofter predict corner solutions, i.e. zero bids for unit prices of expected overextimated quantities. However, anecdotal evidence indicates a lack of zero bids in the...

The Explanation of Incomplete Contracts in Mainstream Contract Theory: A Critique of the...

Mainstream contract theory often makes a distinction between things that are observable by the contracting parties but not verifiable by a third party. This distinction has, e.g. been used to explain why contracts are incomplete in some dimensions...

Climate Policy to Defeat the Green Paradox

Carbon dioxide emissions have accelerated since the signing of the Kyoto Protocol. This discouraging development may partly be blamed on accelerating world growth and on lags in policy instruments. However, it also raises serious question concerning...

A quasi-experimental evaluation of partnering

Construction managerial literature often argues that there are gains to be made by using partnering. Voices have however been raised to approach partnering in a more neutral perspective and with well-founded methods of evaluation. This study can be...

The definition of partnering as a Wittgenstein family-resemblance concept

This article on partnering and family-resemblance makes two contributions to the debate about the definition of partnering in construction. The first is a distinction between general prerequisites, components and goals when discussing the concept....