There's no law saying that driving using both feet is terrible. So, technically it's legal to drive utilizing both feet. However, it would make the driving experience more difficult since the driver can run into some problems while on the road.

Is it OK to drive with two feet?

The basic idea is that by using two feet to drive — one for the accelerator and one for the brake — drivers will be less likely to use the wrong pedal by accident. Because you don't need to maneuver your right foot back and forth, you reduce the chance of an inaccurate placement.

Is driving with both feet illegal?

In short, no, there's no legislation preventing you from driving with both feet at the same time. ​There can be times when it is beneficial to use both feet on one pedal, like the panic-braking trying to avoid a crash.