The Lieråsen tunnel is an important part of the railway network in Norway, and it plays a central role in the development, operation and maintenance of the railway. The tunnel helps to connect urban and rural areas more closely, which is part of a larger strategy to promote sustainable travel alternatives. Through extensive renewal of the power supply on the Sørlandsbanen, improvements have been made that increase punctuality and improve traffic flow.
Safety is a priority in the operation of the tunnel, and measures have been implemented to manage safety at level crossings, including the use of locomotive honking. The Lieråsen tunnel uses modern technology to provide real-time traffic messages, which contributes to a more efficient and safe travel experience. In addition, courses and expertise are offered in electrical safety in the railway, which strengthens the safety culture in the industry.