By way of contrast - not only does the London underground have countdown clocks on platforms (accuracy +&#x2F;- 1 minute), they also have an API allowing 3rd party developers to integrate tube (and bus) times into transport apps.<p><a href="https:&#x2F;&#x2F;tfl.gov.uk&#x2F;info-for&#x2F;open-data-users&#x2F;" rel="nofollow">https:&#x2F;&#x2F;tfl.gov.uk&#x2F;info-for&#x2F;open-data-users&#x2F;</a>