The Federal Roads Office is working on a plan that would see a major widening of the autoroute between Perly and Vernier just after the Bardonnex border.
The route is often jammed at rush hour with thousands of frontaliers heading in and out of Switzerland.
The aim is to build three more lanes, extend two tunnels and dig another.
64,000 m2 of forest would have to be cleared.
The plan has yet to be given the final go-ahead, but the Confederation and the canton are backing the idea.
Bern preparing for fuel shortages
Switzerland is bracing for possible fuel shortages after the closure of the Strait of Hormuz disrupted global oil supplies.
Switzerland becoming the new Dubai?
Switzerland is seeing increased interest from expatriates leaving Dubai amid tensions linked to the conflict with Iran, with the canton of Zug emerging as a key destination.
Court slams deportation decision - man dead
A deportation case is sparking controversy after the death of a 29 year old Ukrainian man who was returned from Zurich to a war zone.
Housing scam rampant
Police are warning of increasingly sophisticated rental scams targeting people searching for housing online.
Asylum applications could be carried out abroad - but will be difficult
A new government report says asylum applications carried out abroad would be legally possible, but difficult to implement.
Move to allow cancer survivors to refresh health insurance
Cancer survivors could soon gain stronger protection when applying for private insurance.
