These charts can be used most successfully with double knitting but an adventurous knitter may adapt them into stranded knitting or intarsia or some combination of the two.
I used wool-ease with an Italian tubular cast-on and then double knit 7 plain rows the caboose three repeats of the passenger car, coal car and engine and 7 more plain rows. I used a sewn cast-off to match the cast-on. It measures appx. 5" x 72" with a gauge of 5 sts per inch on size 7 needles.
Enjoy these charts but please, only use them for personal projects or gifts.
Here's the finished object!