Autobahn-Tempolimit
The A1 and its speed limit
The A1 runs from Heiligenhafen to Saarbrücken and is 741.5 km long. Of that, 506 km have no speed limit (68.2%) – here are the exact figures, the longest open stretch and where the limit applies.
Route of the A1
The A1 runs from Heiligenhafen to Saarbrücken.
Along the way it links Lübeck, Hamburg, Bremen, Osnabrück, Münster, Dortmund and Köln.
Major motorway interchanges along the route include Kamener Kreuz, Kreuz Köln-Nord and Kreuz Bliesheim.
The A1 in numbers
| Category | Length | Share as bar |
|---|---|---|
| Total length | 741.5 km | |
| no speed limit | 506 km | |
| fixed limit | 193.5 km | |
| variable (gantry) | 29.9 km | |
| no limit recorded | 7.3 km |
The longest open stretch
In one go without a limit you can drive up to 181.9 km on the A1 (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 A1 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 A1?
The A1 runs from Heiligenhafen to Saarbrücken and passes, among others, Lübeck, Hamburg, Bremen, Osnabrück, Münster, Dortmund and Köln.
How much of the A1 has no speed limit?
506 km of the total 741.5 km, i.e. 68.2%. The remaining 235.5 km have a fixed limit, are gantry-controlled or have no recorded limit.
How long is the longest open stretch on the A1?
Up to 181.9 km in one go – the longest continuous derestricted section on the A1 (per carriageway).
Does the A1 have variable speed limits?
Yes, about 29.9 km of the A1 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.