610 ILCS 125/1

That every cable, grip, electric, horse or other street car, other than trail cars, which are attached to motor cars, shall be provided during the months of November, December, January, February and March of each year, at both ends with a screen or vestibule constructed of glass or other material, which shall fully and completely protect the driver or motorman or gripman or conductor or other persons stationed on both ends and guiding or directing the motor power by which they are propelled from wind and storm.