It would appear Canadians are souring on discretionary trips to the United States.
U.S.-bound traffic volumes at the Windsor-Detroit Tunnel have fallen as much as seven percent since the trade dispute began.
Windsor-Detroit Tunnel CEO Tal Czudner said the drop at other border crossings is significantly higher.
"We chat a lot," said Czudner. "Some of the other crossings in Ontario to New York and Michigan have big numbers, 14, 16, even a 20 per cent drop in traffic."
The greatest drops are in afternoon and early evening numbers.
Czudner said most of the traffic through the tunnel is workers heading to their jobs in Michigan. He doesn't anticipate that to change, but discretionary traffic is down.
"We're a little bit unique in that we have a lot of people who live in the Windsor-Essex community and commute to the Detroit area to work every day," added Czudner. "A lot of our customers are pretty loyal to the tunnel, and some of that is tied to their employment."
Czudner is hopeful the trade war will end soon.
"I am optimistic that the folks in Ottawa, Washington, and Toronto will figure things out, and we'll go back to being friends again."