[Darth-Apple]

There are cities in America that use them too, but they are not terribly common in most areas. Personally, I love them. I don't see any purpose in having ramps that are almost a mile long in and of themselves. In rural or less urbanized areas, that's perfectly fine, but huge ramps aren't suitable everywhere.

There is a road in my city that very badly needs to be upgraded to a highway and is extremely severely congested. It's also the only north-south corrider in my town, so there is pretty much no alternative way to get around without taking a very odd route with a lot of unecessary turns. If the city wasn't so determined to build mile-long ramps, they could upgrade it easily. Larger cities do this sort of thing all the time.

Love your use of them. They look good and they allow the highway to be compact enough to build sufficiently around it. Huge highways are great as long as they can be used and are needed, but if they are too large, they can take away from a lot of the space around them that could be used to develop areas that generate the traffic to take advantage of the highways.