I was driving quietly along Linwood ave in a jammed up line of traffic ,surrounded by orange road cones when I could not keep the car in a s traight line at all. I thought one or two weels had come loose and I could not pull over to check. Came to a set of lights and stopped then started up quietly to see if it was going to do it again---no problems. That's the problem when you have had so many thousand quakes, you don't make the connection