The Lobdeburg Tunnel on Federal Motorway 4 at Jena will be completely closed in both directions from 20:00 on Saturday, 7 November 2026, until 08:00 on Sunday, 8 November 2026. According to the Autobahn GmbH of the Federal Government and the City of Jena the closure is for a large-scale emergency response exercise. Emergency services from the fire brigade, the ambulance service and disaster response teams from Jena, as well as from the Saale-Holzland district and the district of Saalfeld-Rudolstadt will take part.
The exercise will practise a coordinated response to a major incident in the tunnel. The programme will focus in particular on firefighting, medical first aid, evacuation and traffic management. The aim is to test coordination between the operator, control centres and emergency services, and to assess communications under realistic conditions. The authorities stress that this is a planned exercise and poses no immediate danger.
For road users, this means a full overnight closure of the A4 in the tunnel area. Autobahn GmbH of the Federal Government will put diversions in place and advises motorists to avoid the closure period if possible. Journey times may be longer and routes to destinations may change in the surrounding area. Long-distance traffic should take a wide detour; according to the operator, traffic information will be updated regularly before and during the closure.
Exercises of this kind are a standard part of safety management in road tunnels. Confined spaces, smoke, limited escape routes and complex technical systems require coordinated procedures between tunnel operators and emergency services. Regular drills help verify tactics, train staff and identify potential weaknesses early. The Lobdeburg Tunnel is an approximately 600-metre-long noise protection and road tunnel south of Jena, and forms part of the busy east–west A4 corridor.
Once the exercise is over, traffic is expected to resume normal passage through the tunnel at 08:00 on Sunday. If there are any changes to the schedule, the relevant authorities intend to inform the public at short notice. The City of Jena and the operator specifically urge road users to follow signs and instructions from the traffic control centre, and not to obstruct emergency services.
The overnight closure is part of a preventive safety strategy and is intended to ensure readiness to respond to possible tunnel incidents. Those involved expect the lessons learned to help refine procedures and further improve cooperation across organisational boundaries.
Editor: Mira Cadena (Article created with AI assistance).