This one's for you, Mom.

One of the stories that I recall hearing about the trip to Europe that my parents took in their youth regards my mother's enthusiasm when she discovered that their driving plan took them across the border between a country where cars drove on the left side of the road to one where they drove on the right.

Being a clever person with the heart and soul of an engineer, she set about wondering how the switchover would manifest itself. I believe that she was hoping for an elaborate set of ramps. Not that I find anything wrong with that, I too enjoy driving along elaborate ramps, and look forward to journeys where I can do so. (I am hoping to one day drive along the Norwegian northwest coast highway, as it looks like a big bunch of fun.)

The story goes that when they arrived at the changeover, they found a uniformed policeman who blew a whistle, stopped them, waved some cars coming the other direction to cross in front of them, and then sent them on their way.

Disappointment!

The Google Sightseeing page brings us a shot of The Lotus Bridge, which connects China (drives on the right) and Macau (drives on the left).

Now this is how it should be done.

The loops are enticing, no? Perhaps some week when I have nothing better to do, I will go to China and drive back and forth across the bridge. In the process, I am sure to make friends with all of the customs officials and help further international good will.

As with almost all things, you can learn far more than you ever needed to know about driving sidedness at Wikipedia.