Using this route to travel from Oslo to Bergen is shorter than taking the E16 highway, and this route is much less sensitive to snow storms in the winter (which is fairly long in the mountains) than by taking Norwegian National Road 7 (which is the shortest route between Oslo and Bergen).
This route provides a shorter path from Oslo to Bergen compared to using the E16 highway, and it is less prone to disruptions caused by winter snowstorms, which can persist for an extended duration in the mountainous terrain. In contrast, taking Norwegian National Road 7, although the most direct route between the two cities, is more susceptible to these weather-related issues.