Although people tend to feel well at this stage (3months) it is important to remember that the virus/bacteria is still active. As it continues to reproduce and infect new cells also damages a person's immune system at this period of time.
If you are pulling off the side of the road, first turn on your signal so people behind you will know. Once you are off the road turn on your hazards. so traffic will see that there is someone in the vehicel and they should slow down a proceed with caution.