Originally you said:
Which makes it sound like they're riding after sunset.even if the riders were in violation of riding more than 2 abreast after sunset.
The problem is this has happened twice, which seems to show a disregard on the part of the riders in this group for warnings already given.
If they're speeding, they're speeding, they need to stop doing that. If they're breaking other rules, they need to stop doing that as well.
Whatever the rules are they need to comply with them. There's no excuse for drag racing by cars on isolated stretches of road, even if there isn't "usually" much traffic there. Same rules apply to bikes. Using the same tactics to stop bikes that are used to stop cars isn't a fault on the part of the police. If you're going to fast to stop, whether in a car or on a bike, you were already in the wrong. There IS an immediate danger to the public when you've got a peloton zipping down a public access road like this.
The point is its not a race track, it's a public road, and there are plenty of reasons people might be walking along a well-lit, public road, with kids and dogs in tow, or kids might be walking along there. It's an issue of public safety. It would appear this has been happening on a regular basis, hence the concern and intervention of the local gendarmerie. In order for the cops to be there on two occasions in the right place at the right time, there must be a pattern of disobeying the rules to which they are responding.
Nobody wants anyone to get hurt. But I don't see how much choice the cops had. At the very least, the first attempt to stop the peloton should have been considered a warning, and yet the group repeats the same offense again?