I found it sitting on the white line, having almost run over it.  I backed up and scooped it off the road--it allowed itself to be handled easily--it was so light!--and I placed it by the side, out of the way of traffic.  Perhaps it had flown into a car and was stunned, or perhaps it was ill.

Juvenile sparrow at rest beside of the road
I found it sitting on the white line, having almost run over it. I backed up and scooped it off the road--it allowed itself to be handled easily--it was so light!--and I placed it by the side, out of the way of traffic. Perhaps it had flown into a car and was stunned, or perhaps it was ill.