| Sablé sur Sarthe | Le Bus | Ville de Sablé-sur-Sarthe |  | 02.43.95.10.41 | - 1 bus route
- 1 locality served
- 13 560 residents concerned
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| Saint Amand Montrond | Pepita | Ville de Saint-Amand-Montrond |  | 02.48.63.83.00 | - 1 bus route
- 1 locality served
- 11 447 residents concerned
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| Saint Avold | Transavold | Communauté de Communes du Pays Naborien |  | 03.87.91.16.07 | - 5 bus routes
- 1 transport on request route
- 3 localities served
- 24 000 residents concerned
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| Saint Brieuc | TUB | Communauté d'Agglomération de St-Brieuc - CABRI |  | 02.96.33.47.42 | - 19 bus routes
- 1 transport on request route
- 14 localities served
- 112 000 residents concerned
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| Saint Chamond | STAS Val du Gier | Communauté d'Agglomération Saint-Étienne Métropole |  | 04.77.31.57.38 | - 12 bus routes
- 2 localities served
- 42 000 residents concerned
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| Saint Dié des Vosges | Déobus | Ville de Saint-Dié-des-Vosges |  | 03.29.56.14.12 | - 8 bus routes
- 2 localities served
- 24 000 residents concerned
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| Saint Dizier | Ticéa | Ville de Saint-Dizier |  | 03.25.56.17.73 | - 3 bus routes
- 2 transport on request routes
- 1 locality served
- 32 707 residents concerned
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| Sainte Marie aux Mines | Transports Urbains de Sainte-Marie-aux-Mines | Ville de Sainte-Marie-aux-Mines | - | 03.89.58.80.50 | |
| Sainte Menehould | TUM | Ville de Sainte-Ménehould |  | 03.26.60.80.21 | - 1 bus route
- 5 200 residents concerned
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| Saintes | Bus de Saintes | Syndicat Intercommunal des Transports Urbains de l'Agglomération de Saintes |  | 0.800.17.10.17 | - 3 bus routes
- 6 transport on request routes
- 4 localities served
- 31 700 residents concerned
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| Saint Etienne | STAS | Communauté d'Agglomération Saint-Étienne Métropole |  | 04.77.33.31.35 | - 31 bus routes
- 2 tram lines
- 14 localities served
- 390 000 residents concerned
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| Saint Flour | Transports Urbains de Saint-Flour | Ville de Saint-Flour |  | 04.71.60.91.54 | |
| Saint Jean de Luz | Itzulia | Syndicat Intercommunal des Transports de Saint-Jean-de-Luz / Ciboure |  | 05.59.26.06.99 | |
| Saint Junien | TEC | Communauté de Communes Vienne Glane | - | 05.55.02.14.60 | |
| Saint Lô | Transports Urbains St-Lô-Agneaux | Communauté de Communes de l'Agglomération Saint-Loise | - | 02.33.77.44.88 | - 10 bus routes
- 3 localities served
- 28 310 residents concerned
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| Saint Louis | Distribus | Communauté de Communes des Trois Frontières |  | 03.89.69.73.65 | - 8 bus routes
- 1 transport on request route
- 10 localities served
- 44 342 residents concerned
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| Saint Malo | KSMA | Saint-Malo Agglomération |  | 02.99.56.06.06 | - 14 bus routes
- 1 transport on request route
- 17 localities served
- 80000 residents concerned
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| Saint Nazaire | STRAN | Communauté d'Agglomération de la Région Nazairienne et de l'Estuaire |  | 02.40.00.75.75 | - 13 bus routes
- 8 transport on request routes
- 10 localities served
- 115 000 residents concerned
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| Saint Omer | CasoBus | Communauté d’Agglomération de Saint-Omer |  | 08.00.51.02.32 | - 4 bus routes
- 19 localities served
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| Saint Quentin | Pastel | Communauté d'Agglomération de Saint Quentin |  | 03.23.62.62.62 | - 6 bus routes
- 4 transport on request routes
- 6 localities served
- 80 000 residents concerned
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| Salon de Provence | Libébus | Communauté d'Agglomération Agglopole Provence |  | 04.90.56.50.98 | - 12 bus routes
- 3 transport on request routes
- 8 localities served
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| Sarreguemines | Cabus | Communauté d'Agglomération Sarreguemines Confluences |  | 03.87.28.30.53 | - 9 bus routes
- 2 transport on request routes
- 21 localities served
- 53 030 residents concerned
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| Saumur | AggloBus | Communauté d'Agglomération Saumur Loire Développement |  | 02.41.51.11.87 | - 19 bus routes
- 32 localities served
- 64 563 residents concerned
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| Senlis | TUS | Ville de Senlis |  | 0.820.60.00.60 | - 5 bus routes
- 1 locality served
- 17 192 residents concerned
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| Sens | AS Réseau | Communauté de Communes du Senonais |  | 03.86.64.17.00 | - 13 bus routes
- 4 transport on request routes
- 8 localities served
- 41 792 residents concerned
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| Sète | Totem | Communauté d'Agglomération du Bassin de Thau |  | 04.67.74.18.77 | - 12 bus routes
- 5 localities served
- 40 220 residents concerned
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| Soissons | TUS | Syndicat Intercommunal des Transports Urbains Soissonnais |  | 03.23.53.50.99 | - 11 bus routes
- 9 transport on request routes
- 29 localities served
- 57 376 residents concerned
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| Strasbourg | CTS | Communauté Urbaine de Strasbourg |  | 03.88.77.70.70 | - 40 bus routes
- 5 tram lines
- 1 transport on request route
- 28 localities served
- 557 924 residents concerned
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