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E39 Coastal Highway Route – Lyngdal

The Challenge

The existing road network between the villages of Herdal and Røyskår in Lyngdal, Norway, posed significant safety and efficiency concerns. The route traversed residential areas, leading to increased traffic congestion and potential hazards for local inhabitants. Additionally, the undulating terrain required heavy vehicles, particularly trucks, to navigate challenging hills, resulting in increased travel time and fuel consumption. A modern solution was imperative to enhance safety, streamline traffic flow, and improve transport efficiency in the region.

Nye Veier, the state-owned company responsible for planning and constructing major road projects in Norway, was looking for :

  • Designing a safe and efficient roadway that bypasses residential zones, thereby reducing local traffic disturbances.
  • Constructing dual tunnels to facilitate uninterrupted traffic flow.
  • Creating a straighter route to eliminate the need for trucks to navigate steep inclines, enhancing transport efficiency.
Project details

End User: Nye Veier

Partner: Hatteland and Aventi

Lyngdal, Norway

May 2025

The Solution

In collaboration with contractors Hatteland and Aventi, Nye Veier launched the E39 Lyngdal project in 2021 to construct a safer and more efficient segment of the west coast highway. The new 10-kilometer road features two dual-tube tunnels—Kålåstunnelen (2.7 km) and Rossåstunnelen (3.4 km)—built to ensure uninterrupted traffic flow while minimizing environmental and residential impact.

A key element of the solution was the integration of traffix.ai, the intelligent traffic monitoring and management platform developed by Sprinx. Installed in both tunnels, traffix.ai enables real-time event detection and advanced analytics to enhance road safety and operational efficiency.

The system runs server-side using Nvidia GPU technology, ensuring high-performance processing for video analysis and AI-based incident detection. This infrastructure supports continuous monitoring of traffic dynamics, contributing to safer driving conditions and faster response to incidents.

 

The Result
  • Once operational, the E39 Lyngdal project is expected to deliver: Enhanced safety and faster incident response, thanks to real-time monitoring and AI-powered detection via traffix.ai.
  • Smoother, more efficient traffic flow, with reduced congestion, improved driving comfort, and optimized tunnel operations.
  • Environmental and community benefits, including lower emissions, reduced fuel consumption, and less traffic impact on residential areas.
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