This man travelled from Canada to Mexico on only public transport

When it came to international borders, Mr Hui said he crossed them by foot.

At the US-Canada border, he said he was met with scepticism by border agents as he tried to explain the purpose of his journey.

“There are not that many people who cross the (northern) border by foot,” Mr Hui said.

By contrast, he noticed a more well-travelled route between San Diego, in California, and Tijuana, Mexico, and generally more foot traffic at the southern border.

In all, Mr Hui spent a total of about $200 (£157) on bus tickets. But the views along the way, he said, were priceless.

“I was absolutely amazed by the Oregon coastline when I passed through central Oregon,” he said, and was also “awestruck by the redwoods” as he travelled through northern California.

“And I’ve been saying this to folks who have asked: I was really there for the journey, not so much the destination,” he said.

Mr Hui, who works at TransLink – the transportation authority in Vancouver – said his fascination with public transport stems from his appreciation of the “logistics puzzle” behind transit systems that allow buses and trains to get to their intended destinations on time.

He added that he enjoys the novelty of experiencing a new system of public transport, and the role these systems play in helping connect people from one place to another.

“One thing that struck me on this trip is how important transit is to the communities it serves,” Mr Hui said.

“At no point was I alone on the bus for extended periods of time,” he said.

Another thing that surprised Mr Hui is the minimal delays throughout his trip.

“That was the amazing part,” he said. Even with the notoriously lengthy Los Angeles traffic, Mr Hui said he had enough time to make his next connection and did not have to resort to any back-up plans.

For anyone who wants to set out on a similar journey, Mr Hui advised to research ahead of time and to pack light since there are typically no luggage racks or baggage space available.

He added that it is good to also plan out bathroom breaks.

“Shopping centres, libraries, community centers, those are great places to find a washroom during a short stop,” Mr Hui said.

And perhaps the most important tip: “Know when the bus comes.”