ELI5 Airport Runways - how are they numbered?

ELI5 Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast - A podcast by ELI5 Explain Like I'm Five Podcast - Fridays

What do all the signs on an airport taxiway mean? What do the various markings and lights indicate? How are parallel runways numbered? Why does Atlanta Airport use an alternative NATO Phonetic Alphabet?  ... we explain like I'm five To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: [email protected]