If you are forced to return to the road from the shoulder, you should:

Question

Accepted Answer

Use the mirrors and signal, turn sharply enough to get back on, then countersteer.. Section 2.17: Turn sharply enough to get back on the road safely. Don't try to edge gradually back on, as the tires might grab the edge.

Answer

Steer sharply back onto the road.

Answer

Drive along the shoulder until you stop.

Answer

Accelerate to highway speed on the shoulder.