I was a spectator at the North Yorkshire Grand Prix on 16 Aug. The races had rolling road closures. The standard of marshalling and police escorting was very high. It was clear from talking to a few of the marshalls and police escort riders that they were all acutely aware of what had happened in Portugal and were hyper focussed on keeping the riders safe.
Maybe some would say it was a slight downside that the commissaires were stopping more dropped riders at the end of each lap this year than I recall noticing in previous years. But doing so kept the race bubble small enough that the available resources were able to manage the roads really well for the riders.