Autobahn-Tempolimit
The A8 and its speed limit
The A8 runs from Perl to Bad Reichenhall and is 496.9 km long. Of that, 237.2 km have no speed limit (47.7%) – here are the exact figures, the longest open stretch and where the limit applies.
Route of the A8
The A8 runs from Perl to Bad Reichenhall.
Along the way it links Pirmasens, Karlsruhe, Stuttgart, Ulm, Augsburg and München.
Major motorway interchanges along the route include Dreieck Karlsruhe, Dreieck Leonberg and Kreuz München-Süd.
The A8 in numbers
| Category | Length | Share as bar |
|---|---|---|
| Total length | 496.9 km | |
| no speed limit | 237.2 km | |
| fixed limit | 134.6 km | |
| variable (gantry) | 83.5 km | |
| no limit recorded | 1.8 km |
The longest open stretch
In one go without a limit you can drive up to 84.1 km on the A8 (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 A8 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
Which cities lie on the A8?
The A8 runs from Perl to Bad Reichenhall and passes, among others, Pirmasens, Karlsruhe, Stuttgart, Ulm, Augsburg and München.
How much of the A8 has no speed limit?
237.2 km of the total 496.9 km, i.e. 47.7%. The remaining 259.7 km have a fixed limit, are gantry-controlled or have no recorded limit.
How long is the longest open stretch on the A8?
Up to 84.1 km in one go – the longest continuous derestricted section on the A8 (per carriageway).
Does the A8 have variable speed limits?
Yes, about 83.5 km of the A8 are controlled by overhead gantries. There a limit can be shown even where the road is otherwise open.
Data source: our own analysis of OpenStreetMap speed limits, as of 22 September 2026. Kilometres averaged per carriageway. Not an official survey.