Obviously, LA is too wide spread to ever have an effective mass transist system. So, I was wondering, could we simply shift the number of lanes depending on the traffic? For the 405, there's 4 or 5 lanes going each way. However, its always one end that's congested while the other one has much less traffic. Couldn't they simply shift the number of lanes so that the busier side, ex. north, would get 6 lanes open while the other side, ex. south, Â would get 4. And, at the end of the day when traffic flow reverses, shift the lanes so that the south side would now get 6 lanes and the north get 4. I remember up in Canada, they did something like that. Or, what about what London did to tackle their traffic problems? How effective has that been, and would it work in LA? I think they've made the roads into downtown London toll roads, and the fees would depend on the time. If you went in at peak traffic hours, the fee would be higher than other times.