238 N.W. 703 BYRON F. ROSENBERG, Appellant, v. Des MOINES RAILWAY COMPANY, Appellee. No. 40629.Supreme Court of Iowa. October 27, 1931. RAILROADS: Operation — Accident at Crossing — Contributory 1 Negligence Per Se. The driver of an automobile is guilty of negligence per se when, upon entering during the daytime a private crossing over much-used […]