secondo USTRA, Rapp. espl. Revisione parziale dell’ordinanza sulla segnaletica stradale, 2024-06-07, pag. 25 ([Internet, 2024-06-13](https://www.fedlex.admin.ch/filestore/fedlex.data.admin.ch/eli/dl/proj/2024/50/cons_1/doc_15/it/pdf-a/fedlex-data-admin-ch-eli-dl-proj-2024-50-cons_1-doc_15-it-pdf-a.pdf))
EXP: von Autobahnen und Autostrassen
USG: privilégié; EXP: des autoroutes et semi-autoroutes
USG: preferito; EXP: di autostrade e semiautostrade
ASTRA, Erl. Ber. Teilrevision der Signalisationsverordnung, 2024-06-07, S. 2 ([Internet, 2024-06-13](https://www.fedlex.admin.ch/filestore/fedlex.data.admin.ch/eli/dl/proj/2024/50/cons_1/doc_15/de/pdf-a/fedlex-data-admin-ch-eli-dl-proj-2024-50-cons_1-doc_15-de-pdf-a.pdf))
d'après OFROU, Rapp. expl. Révision partielle de l’ordonnance sur la signalisation routière, 2024-06-07, p. 2 ([Internet, 2024-06-13](https://www.fedlex.admin.ch/filestore/fedlex.data.admin.ch/eli/dl/proj/2024/50/cons_1/doc_15/fr/pdf-a/fedlex-data-admin-ch-eli-dl-proj-2024-50-cons_1-doc_15-fr-pdf-a.pdf))
secondo USTRA, Rapp. espl. Revisione parziale dell’ordinanza sulla segnaletica stradale, 2024-06-07, pag. 2 ([Internet, 2024-06-13](https://www.fedlex.admin.ch/filestore/fedlex.data.admin.ch/eli/dl/proj/2024/50/cons_1/doc_15/it/pdf-a/fedlex-data-admin-ch-eli-dl-proj-2024-50-cons_1-doc_15-it-pdf-a.pdf))