[thefro526]

More often than not, two drivers should be able to more effectively utilize a 'common' FRC robot. Like others have said above, one driver will focus on where the robot needs to go and how to get there (base driver) and the other driver can focus on what it does when it's there (operator/aux driver).

That being said, some machines are so simple that they can easily and more effectively be driven by a single driver. If this is the case, using one driver is perfectly acceptable.

I can remember a handful of machines in 2010 that were more or less 'driven' by a single person an the second driver/operator acted as a second coach of sorts. It's an interesting dynamic for sure.