[mmorris]

Since in NYC taxis are a substantial portion of road traffic, I once had the idea that NYC should have a special navigation platform (maybe based on Google Maps?) that the taxis are mandated (or, more likely, highly encouraged) to follow, which would essentially load balance the traffic.

The city could include data about road closures, police & fire incidents, etc.

This might even be used to reduce traffic along bus routes, thereby increasing efficiency for them as well.

If someone works in the T&LC and wants to implement this feel free. ;)

EDIT: Note this works particularly well in Manhattan where the grid system means there are generally many routes of equal length between any two points.