Summary
FLOU Consultants Report
Second Opinion on Cross-Border Freight Flow Analyses
Reference Case: The Nordic Connector (NC)
It is
laudable that an independent party was commissioned to review the NC travel
forecast. That task is rarely undertaken but should be done for all projects and
plans. Many forecasts are made by ‘black boxes’ few understand.
Finnish
Transport Infrastructure Agency and WSP consultants (FTIA/WSP)
freight forecast for Nordic Connector is deficient for two reasons: Nordic
Connector is considered just a link between Vaasa and Umeå regions. And the
choice of forecasting model systems for freight and passenger demand models
required intensive data work to obtain a trip matrix for model calibration.
Shortcomings in data assembly and calibration required “expert judgment”
corrections in freight volume forecasts.
Evaluation
of many alternatives compounds the work required to prepare the data and “run”
the models. With good scoping before deciding on the alternatives, the number
of alternatives could have been cut to two or three for thorough analysis. FTIA
is silent on project procurement, which is an important matter.
FLOU
acknowledges the importance of input data, but explanations for data “fudging”
are insufficient or absent. That concerns all data: population and employment
and the network. Description of NC as a link between Vaasa and Umeå is not
justified. Restriction on the forecast traffic flows on NC is not examined. Network
description for the models is severely limited.
FLOU recognizes that FTIA/WSP forecast contains many simplified assumptions and has questionable deficiencies. FLOU’s review treats these shortcomings lightly. FTIA/WSP forecasts 645 daily vehicles in normal circumstances, and 1350 daily vehicles if the southern ports are closed. The corresponding NCAT (NordicConnectoAnttiTalvitie) forecasts are 1550 and 1711 daily cargo units. Passenger volumes are about in the same ballpark in both FTIA/WSP and NCAT forecasts, 3500 -4900 daily vehicle trips.























