|Authors:||Aud Tennøy, Elise Caspersen, Oddrun Helen Hagen, Iratxe Landa-Mata, Susanne Nordbakke, Kåre H. Skollerud, Anders Tønnesen, Jørgen Aarhaug|
|ISBN (digital version):||978-82-480-1571-0|
The report without exhibits - in Norwegian only
Exhibits - in Norwegian only
This report summarizes results of analysing adaptions to, effects and consequences of, a capacity reduction in the Smestad tunnel in Oslo from four to two lanes in the period of June 2015 to May 2016. As the tunnel carries about 50 000 vehicles a day, significant increases in congestion were expected and communicated. This information resulted in a 33-37 percent traffic reduction in rush hours the first day, and reduced congestion. As the press reported this, traffic rapidly grew back to normal volumes. Interestingly, this caused only small reductions in average rush hour speeds. The tunnel carried 50 000 vehicles a day well, also with two lanes. Hence, road users made only limited adaptions, and experienced almost no effects or consequences. The findings open for new ways of thinking about how we can develop more sustainable urban transport systems, and calls for further investigations into congestion in urban road systems.