A well considered point of view. I am firmly of the opinion that filtering needs to be done carefully and considerately and we need to take care not to intimidate those stuck in the queue; we don't have a right to force our way through. Flashing LEDs and hazards can easily be construed as aggressive and will certainly defeat the object in a lot of car drivers eyes. If you read some of the comments on YouTube videos aggressive filtering really pisses off a lot of car drivers.