যানজট কমাতে সরকারের কি প্রধান মহাসড়কগুলো সম্প্রসারণ করা উচিত?

Seed source: Swissvotes federal popular vote dataset.
Swissvotes page: https://swissvotes.ch/vote/504.00
Official result data: https://bk.admin.ch/de/details-referenden-und-weitere-erlasse?voteNumber=504
Vote date: 2004-02-08
Original Swissvotes English title: Gegenentwurf zur Avanti-Initiative
Original German title: Gegenentwurf zur Avanti-Initiative
Swissvotes keyword/additional content: Avanti plus
Swissvotes short-description title: Endstation Gotthard: Avanti plus scheitert in allen Kantonen
Original French title: Contre-projet relatif à l'initiative Avanti
Année Politique Suisse description: https://anneepolitique.swiss/prozesse/23101
BFS result map (German): https://mapexplorer.bfs.admin.ch/?obs=politic&lang=de#c=indicator&i=vp20040208.prop_oui_504_0
BFS result map (French): https://mapexplorer.bfs.admin.ch/?obs=politic&lang=fr#c=indicator&i=vp20040208.prop_oui_504_0
Official chronology (French): https://bk.admin.ch/fr/details-referendums-et-autres-actes?voteNumber=504