I was using WAZE a few days back and the road was entirely blocked close to my home but it didn't show it. I drove to the blockade to check and notified WAZE about it but the next day it still did not know about it. But it was officially announced by the government so GOOGLE MAPS NAVIGATION knew about it. Also HERE navigation probably knew about it but I didn't test it because I forgot the sequence needed to activate real time traffic information.
So here I write the steps down again (as a refence for myself

).
also this link posted by @Steve_M is useful:
https://www.techinfo.honda-eu.com/sites/default/files/2024-05/here-navigation-services-and-updates.pdfSo if you want to use real time traffic info in the built-in HERE navigation in your car these are the steps to follow.
1) use USB cable to attach the phone to the car. This enables you to use Android Auto (or Apple Carplay) simultaneously
2) turn on the WIFI hotspot on your phone. Activating the WIFI hotspot will turn off the WIFI cliënt-modus on phone. So now the phone cannot receive WIFI. Therefor you need the USB cable to use Android Auto (Apple Carplay) simultaneously. It asks for confirmation to turn off the WIFI cliënt.
3) in the settings of the car chose NETWORK instead of WIFI
4) in the settings of the navigation system, online services should go on automatically (check if it is on). If you are subscribed to online services (which was by default in my car) then this step will be automatic if step 2 and 3 are done before. So step 4 you can ignore when you are already subscribed.
Now you have real time traffic info on HERE navigation, plus you can also use Android Auto (Apple Carplay) via the USB cable