The Sleepless Knight
Written by
Leslie Charteris
Copyright 1934
First published as The Slave Driver Sees The Red Light in the Empire News (Nov 5, 1933), then in The Saint Mystery Magazine (US - Feb 1959) and The Saint Detective Magazine (UK - Apr 1959) with the known current title. Also published in the collection and The First Saint Omnibus.
A trucking company is forcing its drivers to push themselves and an innocent cyclist loses his life because of it.