Abstract: A vehicle assembly line has a main line comprising an automated assembly line portion disposed in an upstream portion thereof, a manual assembly line portion disposed in a downstream portion thereof and an automated work line portion disposed in the terminal portion thereof. The automated assembly line portion is formed of train type conveyors which can feed a vehicle body or a work selectively in continuous feed fashion or indexing feed fashion. The manual assembly line portion is formed of trolley type or power-and-free type conveyors which feed the vehicle body continuously. The automated work line portion is formed of train type conveyors which feed the vehicle body in indexing feed fashion. In the automated assembly line portion are included the assembly steps which have already been automated and those which are scheduled to be automated but are to be manually performed for the time being.

Abstract: A hanger conveyance for the transport of left-hand and right-hand automobile door assemblies from and back to a loading site through a door fitting station and then through an unloading site, which hanger has first and second door supports for the support of the door assemblies generally in parallel relation to each other. The door assemblies removed from an automobile body structure are loaded onto the respective first and second supports at the loading site and are then transported towards the door fitting station with the left-hand and right-hand door assemblies confronting first and second directions opposite to each other, respectively. At the door fitting station, the hanger is turned 180.degree. about a vertical axis to render the left-hand and right-hand door assemblies to confront the second and first directions, respectively, after one of the door assemblies has been tooled up from one side and is again turned 180.degree.