Quote from: Wumpty on April 10, 2024, 11:00:35 AMI'm sure I remember some city routes had different other letters to signify where in the city centre they stopped.The Birmingham approach was to give each of the short workings a different letter with A closest to the city terminus and going upwards from there. On the 50 to Maypole letters reached 50K Alcester Lanes End. (50F was Moseley Village, 50J Kings Heath)
"E" was the exception and then there were others like D, and F that would indicate other curtailments.
I'll stand corrected and bow to greater knowledge on this.