When I worked in the Philippines @MOTU13 the wife and I had bomber car for driving between Clark AB, the Subic NB and local trips but I never like driving near Manila. It's the law of the jungle when driving there. Nanometers off the bumpers, loud horns, bright colors and the ability to drive like in a Bond movie are all standard requirements for the daily drive.The Delta-V argument is one I've been saying for years, and did not realize there were scholarly studies on it.
I've driven several places in the world (30+ states, several Canadian provinces, Manila and other parts of Luzon, Crete, France, Korea, Singapore, Mexico) and I subscribe to the idea on a tier above just Delta-V. It's more like Delta-driving-habits in my book (to an extent, and with caveats). Basically, "when in Rome, do as the Romans do," with respect to the official rules of the road of course, but also with respect to the de facto rules of the road.
For instance, driving in Manila requires one to abandon all they thought they knew about safety and drive in a manner that would be considered balls-out reckless in other parts of the world. Run red lights, drive on the wrong side of the road, enter a 7-way bastardized starfish intersection with total disregard for all traffic signals (if they exist), etc. If you try to drive like you were taught in the west, you might as well be an angelfish trying to school with piranhas. You have to be a piranha to get anywhere period, much less get there in one piece.