How to fill travel hisorty for your spouse PR if someone if driving truck to us. And go to us every alternative day.
Not sure this responds to the question.
But the PR's travel history should list every date the PR exited Canada and every date the PR entered Canada. This includes day trips and overnight trips. The days abroad for a day trip to the U.S., or an overnight trip, is zero. But the PR should be keeping track of all those trips and report them accurately in their travel history.
Example for day trip to the U.S.:
[From: 2022-03-17] [To: 2022-03-17] [Location: Detroit, Michigan, U.S.] [Reason: work; trucker driving U.S. routes] [Number days: 0]
Example for overnight trip:
[From: 2021-11-23] [To: 2021-11-24] [Location: Detroit, Michigan, U.S.] [Reason: work; trucker driving U.S. routes] [Number days: 0]
Example for two night trip:
[From: 2021-12-15] [To: 2021-12-17] [Location: Michigan and Ohio, U.S.] [Reason: work; trucker driving U.S. routes] [Number days: 1]
For clarification: the day a PR exits Canada does not count as a day absent. Likewise the day a PR enters Canada. So for day trips and overnight trips the number of days outside Canada is zero.
Midnight to midnight determines the day. Actually getting through border control determines the day of return to Canada, so it is not when the PR drives onto the Ambassador Bridge (Michigan to Ontario) or the Queenston-Lewiston Bridge (New York to Ontario), but when the PR is actually cleared to proceed by customs. If that is half-past midnight, the date of entry is that day's date.
For a trucker regularly serving routes in the U.S., yes that history can add up to a lot of entries. Best to keep good records. To report the full history, use extra sheets of paper with history listed in the same form as in the application.