Autobahn-Tempolimit
The A39 and its speed limit
The A39 is 104.5 km long. Of that, 62.3 km have no speed limit (59.6%) – here are the exact figures, the longest open stretch and where the limit applies.
The A39 in numbers
| Category | Length | Share as bar |
|---|---|---|
| Total length | 104.5 km | |
| no speed limit | 62.3 km | |
| fixed limit | 42.2 km |
The longest open stretch
In one go without a limit you can drive up to 27.6 km on the A39 (per carriageway) – the longest continuous derestricted section of this Autobahn. On the interactive map you can follow exactly where the limit drops and where it returns.
Enter start and destination and see how much of your drive is open – and what that means for travel time.
How the figures are produced
The basis is our own analysis of the freely available OpenStreetMap data. For every section of the A39 we check whether a speed limit is recorded and sum the length by category. “No limit recorded” means the tag is missing in the data – which is not the same as open road. This is a data-based analysis, not an official survey.
Frequently asked questions
How much of the A39 has no speed limit?
62.3 km of the total 104.5 km, i.e. 59.6%. The remaining 42.2 km have a fixed limit, are gantry-controlled or have no recorded limit.
How long is the longest open stretch on the A39?
Up to 27.6 km in one go – the longest continuous derestricted section on the A39 (per carriageway).
Is the A39 completely derestricted?
No. While 59.6% is open, interchanges, junctions and roadworks carry a limit. No Autobahn is fully derestricted.
Data source: our own analysis of OpenStreetMap speed limits, as of 29 August 2026. Kilometres averaged per carriageway. Not an official survey.