Keywords: Singapore trolleybus - ca. 1930.jpg en Side frontal view of a Singapore trolleybus Note that the front is designated as first class and that the rest is second class http //www flickr com/photos/32315868 N03/4197441576/ Flickr - uploader to Flickr claims copyright but image is Public Domain author ~ 1930 PD-SG-photo Trolleybuses in Singapore Single-decker buses |