That source has a pretty significant bias itself. It being from 2001 might be a clue as to why: before polymer-modified bitumen, there were many more downsides to using open asphalt mixes on anything but long, straight highways. That’s probably also why it only mentions hot-mix asphalt, which the Netherlands is basically banning next year for environmental reasons in favour of warm-mix. I REALLY hope this isn’t the latest version of this book.

It’s true that high-speed roadways more greatly benefit from open asphalt, but it’s very much not true that open-graded mixtures don’t have benefits at lower speeds. They still reduce road noise by 5-7 db even at 50kph speeds, and of course the benefits of less water on the road is substantial. The downside is that there is more fraying, so using it at traffic lights or roundabouts is not a great idea. Even with modern PMB mixes and SAMI treatmeants that reduce fraying pretty effectively (which didn’t really exist in 2001 when that source was composed), a stone-mastic asphalt is still the go-to for areas with a lot of turning or braking.

But most of all, it’s more expensive to build and to maintain, and since maintenance is already pretty crap in a LOT of places (having 6 or 7 lane accessroads doesn’t help there) using open asphalt is probably a bad idea.

Source: Married a Dutch engineer, worked on a lot of roadbuilding projects myself (admitedly not in the design phase, I do know what gets put where here in the Netherlands).