Browsing NTNU Open by Author "Welde, Morten"
Now showing items 1-20 of 67
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An Empirical Bayes before-after evaluation of road safety effects of a new motorway in Norway
Elvik, Rune; Ulstein, Heidi; Wifstad, Kristina; Syrstad, Ragnhild S; Seeberg, Aase R; Gulbrandsen, Magnus U; Welde, Morten (Journal article; Peer reviewed, 2017)This paper presents an Empirical Bayes before-after evaluation of the road safety effects of a new motorway (freeway) in Østfold county, Norway. The before-period was 1996–2002. The after-period was 2009–2015. The road was ... -
Avoiding Cost Overrun Through Stochastic Cost Estimation and External Quality Assurance
Welde, Morten; Klakegg, Ole Jonny (Peer reviewed; Journal article, 2022)Cost overruns are a threat to project performance and continue to attract interest in both the popular media and the academic literature. Numerous studies from all continents have demonstrated that overruns remain prevalent ... -
Bruk og nytte av etterevalueringer av prosjekter
Bukkestein, Ingri; Welde, Morten; Volden, Gro Holst (Research report, 2020) -
Byggeklossmetoden for kostnadsestimering av jernbane – er metoden relevant for pålitelig estimering i tidligfase?
Brendås, Michael Andersen (Master thesis, 2023)InterCity-prosjektet på Østfoldbanen opplevde en betydelig kostnadsøkning fra konseptvalgutredning til forslag til kommunedelplaner. En evaluering av kostnadsøkningen pekte på ulike bakenforliggende årsaker. Et forhold ... -
Cost and schedule performance in large government projects
Welde, Morten; Engebø, Atle (Journal article; Peer reviewed, 2024)This paper uses data from 111 large government projects in Norway. We compare their final cost to the formal budget set by the parliament in their formal funding decision. We use standard statistical measures to illustrate ... -
Cost Escalation in Road Construction Contracts
Welde, Morten; Dahl, Roy Endre Holsvik (Peer reviewed; Journal article, 2021)This paper presents a study of cost escalation in unit price road construction contracts. The aim is to investigate why the final cost of contracts differs from the agreed contract cost following tendering, both to identify ... -
Cost escalations in the front-end of projects – empirical evidence from Norwegian road projects
Welde, Morten; Odeck, James (Journal article; Peer reviewed, 2017)This paper investigates an issue largely ignored in the transport literature on cost overruns, namely, cost increases in the early project phase, long before the decision to build is made. This is the phase of project ... -
Cost Overruns of Transportation Infrastructure Projects
Odeck, James; Welde, Morten (Chapter, 2021)What is a cost overrun of a transportation project? What problems does it cause? How should overruns be measured? How common and prevalent are overruns worldwide? What are the potential ways of avoiding overruns? These are ... -
Do Fixed Links Affect Settlement Patterns: A Synthetic Control Approach
Tveter, Eivind; Welde, Morten; Odeck, James (Journal article; Peer reviewed, 2017)This paper evaluates the extent to which transportation projects affect settlement patterns. We consider fixed link projects because they provide a large and swift change in accessibility. We use the synthetic control ... -
Do nothing, do minimum or do something? Why public project appraisals “always” recommend large projects
Volden, Gro Holst; Welde, Morten; Engebø, Atle; Andersen, Bjørn Sørskot (Journal article; Peer reviewed, 2024)Purpose: In the project initiation phase, an appraisal is needed to clarify the strategic problem and alternative solutions. Full-scale construction projects and simple solutions (do-minimum alternatives) should be assessed. ... -
Do Planners Get it Right? The Accuracy of Travel Demand Forecasting in Norway
Welde, Morten; Odeck, James (Journal article; Peer reviewed, 2011)This paper deals with the accuracy of travel demand forecasts among Norwegian road projects. We use data collected from tolled roads and toll free roads. The results reveal that while traffic forecasts of tolled schemes ... -
En modell for evaluering av arbeid med planlegging og bygging av vegstrekninger
Finne, Håkon; Lervåg, Lone-Eirin; Ramstad, Lone Sletbakk; Welde, Morten (SINTEF Rapport, Research report, 2022)Rapporten presenterer et rammeverk for en modell for evaluering av arbeid med planlegging og bygging av vegstrekninger, og anvisninger for hvordan modellen kan brukes før, under og etter gjennomføring av slike vegprosjekter, ... -
Erfaring med totalentrepriser i bygg- og anleggsprosjekter
Welde, Morten; Aass, Torbjørn; Engebø, Atle; Haaskjold, Haavard (Report, 2024) -
Essays on Cost Estimations and their Uncertainties in Transportation Projects
Welde, Morten (Doktoravhandlinger ved NTNU, 1503-8181; 2011:163, Doctoral thesis, 2011) -
Estimering av kostnader i store statlige prosjekter: Hvor gode er estimatene og usikkerhetsanalysene i KS2-rapportene?
Welde, Morten; Jørgensen, Magne; Larssen, Per Fridtjof; Halkjelsvik, Torleif (Concept rapport;, Book, 2019) -
Etterevaluering av prosjektet Rehabilitering av Norges idrettshøgskole
Whist, Erik; Welde, Morten; Samset, Knut Fredrik (Research report, 2022) -
Evaluation of Probabilistic Project Cost Estimates
Jørgensen, Magne; Welde, Morten; Halkjelsvik, Torleif (Journal article; Peer reviewed, 2021)Evaluation of cost estimates should be fair and give incentives for accuracy. These goals, we argue, are challenged by a lack of precision in what is meant by a cost estimate and the use of evaluation measures that do not ... -
Evaluering av E6 Østfold. Delprosjektene Åsgård–Halmstad og Svingenskogen–Åsgård, samt samlet Utbygging
Ulstein, Heidi; Wifstad, kristina; Syrstad, Ragnhild Sjoner; Seeberg, Aase Rangnes; Gulbrandsen, Magnus U.; Welde, Morten (Research report, 2017)På oppdrag for forskningsprogrammet Concept ved NTNU1har Menon Economics evaluert E6 i Østfold.Vi har evaluert to delprosjekter, Åsgård–Halmstad og Svingenskogen–Åsgård, samt utbyggingen av E6 samlet. Denne rapporten ... -
Evaluering av konseptvalgutredninger i transportsektoren
Egeland, Sindre; Aarøe, Haakon Dyb (Master thesis, 2018)I denne oppgaven har vi evaluert KVU-ordningen og funnet ut at den ikke fungerer optimalt sett i lys av ordningens formål. Noe av årsaken til dette virker å være at bestillinger og mandat fra politisk hold ofte er for ... -
Evaluering av Rv. 13 Hardangerbrua
Wifstad, Kristina; Haugland, Lars Martin; Aalen, Petter; Gulbrandsen, Magnus; Ulstein, Heidi; Nilsen, Øyvind Lervik; Melbø, Olaf; Welde, Morten (Research report, 2018)Rv. 13 Hardangerbrua som krysser Hardangerfjorden i indre Hardanger, åpnet for trafikk august 2013. Brua erstattet fergesambandet Bruravik-Brimnes. Prosjektet ble hovedsakelig finansiert med bompenger, i tillegg til kommunale ...