I'd be interested in what you are experiencing. Assuming you have your system set to display traffic incidents (yellow triangle), are you seeing actual accidents being displayed in a timely manner. My example: A major street had been shut down for 4 hours for a fatal accident, in the opposite direction I was traveling. The accident was not displayed on my NAVI. So length of time or severity cannot be the reason it was not displayed. I brought it up during a recent service and was told they couldn't do anything since Honda Technical support did not work on Saturday.