At 01:21 PM 7/12/2004 +0000, you wrote:

Just for the record, one does not have to change from right to left or v.v. in Japan when one drives onto U.S. bases there. The U.S. accepts Japanese conditions.

but the US forces NZers to drive on the right in the Ross Dependency, because their research base has more vehicles than the NZ base...

As for HK-China, like the border between Shenzhen China and the rest of Guangzhou (which is fenced), all traffic is checked, passports/permits stamped etc. So the HK border is very busy, but you certainly can't just drive straight through. The Chinese love flyovers, so if you ever can drive through, there will be a flyover to put you on the correct side.

The question is, do the walkways for pedestrians have some mini-flyover , or do people have to barge through each other to walk on the correct side?
Given that Brits walk on the left, but the escalators in tube stations ask you to stand on the right, it's no wonder London tube stations are a human traffic jam!

The most authoritative reference that I am aware of on this subject is a book called The Rule of the Road: An International Guide to History and Practice by Peter Kincaid (Greenwood Press, 1986; 239 pages; ISBN 0-313-25249-1), available from the publisher at http://info.greenwood.com/books/0313252/0313252491.html.

Brendan