Riding the Ridges

I rolled past the heavy glass entrance doors right out onto the open stone plaza! The wide grey granite stretched under the afternoon light, and right down the middle lay a bright yellow strip of raised tactile paving. Two straight, parallel ribs raised above the stone, laid out just like real railway tracks! Did I hesitate? Not for a single turn of an axle! I lined up my front buffer, revved my motor to top speed, and drove straight onto the ribbed line. Clack-hum! My driving wheels gripped the edges perfectly, gliding in a smooth, continuous line past the heavy stone pillars. A brand-new outdoor mainline open for express service!