The A1 will be closed for a few hours in June between Avenches and Payerne

Swiss Air Force testing their landings on the motorway.

“Planned between Tuesday 4 June at 21:00 and Thursday 6 June at 09:00”…s-2062405.html

Looks like an opportunity to see the aircraft from close distance. Park in nearby town, ride the bike to a small road close to the A1.

I think that the majority of what you see will be crews disassembling then reassembling the central barriers.

You can see f18s most days close to Payerne, even the motorway services nearby give a good view.