Filtering through traffic makes a lot of sense when traffic is heavy at busy times - especially with more bikes being used for travelling to work.
In our surveys you said that you enjoy biking to work - it is cheaper than using the car and you can cut journey times by filtering through traffic jams. All good stuff...but more and more collisions are happening to riders on journeys to work through heavy traffic.
Check - does the driver know you are there? Watch for clues that may mean the driver is tired of waiting and may grab a chance to escape from the queue, pulling out on you with little warning.
One of the major causes of biker crashes is the vehicle which emerges through queueing traffic to turn right or go straight across the junction.