En modell för produktivitetsanalys av väginvesteringar

Download

The construction industry’s productivity performance, measured on an aggregate level, is dismal compared to other industries. Despite a substandard performance, no reasons have been established. One explanation is that disaggregate data facilitating a deeper analysis of the development has not been available. A huge share of the construction industry consists of infrastructure construction and maintenance. All infrastructure activities of this nature is competitively tendered. This provides the basis for the recommendation given in the present study for – first – how to measure productivity, or equivalently cost efficiency, and – second – to provide scope for analyzing any (positive, or more probably negative) performance trend. To be specific, the idea is to use the tendered contracts or possibly the documented outcome of each contract, or even both, to develop our understanding of the development of productivity. Within the scope of this proposal, focus is on Design-Bid-Build (DBB) contracts (utförandeentreprenader). One particular aspect of DBB contracts is that a construction assignment is based on a detailed Bill of Quantities (BoQ). This document describes in great detail precisely which activities an entrepreneur is supposed to implement and also the quantity of each. Having implemented the BoQ results in a piece of infrastructure without the contract necessarily has described the nature of the road or railway to be built. The recommended method for measuring productivity development is to use Stochastic Frontier Analysis (SFA). This approach has been developed over a long period of time and applied in a number of different sectors of the economy. It has, however, never been tested on infrastructure investment projects. The idea is to test SFA in full scale on a number of similar road investment projects and to use the BoQ’s and associated bid prices for measuring performance both on a cross section sample of projects and subsequently also over time.

MEET US


25-26
Apr

Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.
13-14
Jun

The 6st Humanist Conference

The 6th HUMANIST Conference will take place 13-14 June 2018 in the Hague, The Netherlands. The scope of the conference covers a wide range of topics on Human Factors in Transport. Tania Willstrand and Alexander Eriksson will present their research results.

LATEST NEWS


2018-04-17

VTI will develop simulators for ambulance staff

VTI has initiated a pilot study for paramedics with the Centre for Teaching & Research in Disaster Medicine and Traumatology and Linköping University. The aim is to give ambulance staff the opportunity to practice critical medical tasks in a moving vehicle in...


2018-04-12

Unique electrified road opens in Sweden

The world’s first electrified road recharging the batteries of cars and trucks while driving opened in Sweden. The Swedish Minister for Infrastructure, Tomas Eneroth, was at the formal inauguration of the electrified road on April 11, 2018. VTI is one of 22...


2018-04-11

Swedish road safety spreads internationally

Sweden is a leading country in terms of road safety, and the research conducted by the Swedish National Road and Transport Research Institute (VTI) has contributed to increased safety. VTI’s remit includes disseminating research results and keeping up to date...


2018-04-06

A greater understanding of cyclists' behaviour

Cyclists are often accused of not following traffic rules and being hooligans on the road. New research shows that there is no support for this perception. "Our observations reveal no such general anarchy" says Sonja Forward, researcher at VTI.


2018-03-28

New technology for road surface measurement tested

VTI has tested a new scanning-laser technology for road surface measurement. The tests show the new technology for comprehensive transverse-profile measurement provides dependable values in measuring transverse profile and rut depth.


2018-03-15

Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018

VTI’s Senior Research Leader Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018 for his work on research into tyres and road surface.