| A1
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| Base data
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| Length
| ca. 410 km (255 mi) |
| Exits and buildings
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| Autobahn part A1a (Genève)
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| Autobahn part A1a (Genève Lac)
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| Autobahn part A1a (Lausanne)
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| Autobahn part A1H (A3)
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| Autobahn part A1L
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| Autobahn part A1.1
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The A1 is a motorway in Switzerland. It follows Switzerland's main east-west axis, from St. Margrethen in northeastern Switzerland's canton of St. Gallen through to Geneva in southwestern Switzerland.
With the build of the third Baregg Tunnel tube the traffic jams in this area were reduced but the Gubrist Tunnel remains with the old capacity as a new point of heavy traffic.
See also