Isn't that pretty similar to the "Merge in turn" that the UK Highway Code recommends?
> Merging in turn is recommended but only if safe and appropriate when vehicles are travelling at a very low speed, e.g. when approaching road works or a road traffic incident. It is not recommended at high speed.
If you like reading and have ever spent more than an hour or two thinking about traffic and American car culture, consider reading this http://www.amazon.com/Traffic-Drive-What-Says-About/dp/03072...