I am the Online Media Specialist for STL Metro, and I can see your point that rules and regulations may not have a cohesive home on the website.
Are there specific questions I can answer for you? Basic riding rules including must have valid fare, no eating or drinking, no loud music, no pets except for service animals, no leaving your bags unattended.
Having ridden on Metrolink a couple times when there, I’m not sure there ARE any. 🙁
But here’s where the offical answer is buried on their site: http://www.metrostlouis.org/metrolink/
See in particular the “How to Ride”:
Remember, using radios without ear plugs, smoking (including electronic cigarettes), eating and drinking are prohibited on all Metro transit vehicles. Please be courteous to other passengers by obeying these rules.
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