Driveway Gates come in thousands of designs and many materials but only in two common configurations. These are either sliding or swing gate.

Sliding gates consist of one leaf gate.  Swing gates consist of two leaf gates.  But there can always be exceptions.  A single leaf gate can be automated to swing and two swing gates can be joined to slide with a gate motor.

If you have never automated your driveway gate and budget is limited, then you do not have much choice in the gate configuration...