This site has up to date information... http://belizebus.wordpress.com/
This page has links to James Line, Tillett and several
other bus company schedules, plus the widely available National
Transport schedule. Haven’t checked to see if these are up to date,
but they’re better than what I’ve seen before.
Here is the best I have found:
http://www.guidetobelize.info/en_bus.html
Article Number: 208
Author: Sat, Apr 4, 2009
Last Updated: Fri, Mar 2, 2012
Author: Marty Casado
Online URL: https://ambergriscaye.com/help/article/do-you-have-a-bus-schedule-for-belize-bus-operators-208.html