One truth unites most riders of New York City public transit: The system is in crisis.

Many people who live in, or even just visit, New York can’t help but dream of an alternate transit universe with the on-time arrivals of the Berlin U-Bahn, the spotless platforms and cars of the Tokyo Metro, the modern payment system of the London Underground and the low fares of Hong Kong’s Mass Transit Railway.

If you’ve lived in or visited a city, domestic or international, with laudable transit features, we want to hear from you. Tell us what you like or remember most about the system. Your submission may be chosen for publication.