(23 Sep 2020, 10:56 am)big mac wrote Although the frequency from Durham to Langley Park has doubled since the X20 replaced the 14. Maybe they think a 30 frequency with Optare Solo buses on this section is enough, but not sure about Durham to Sunderland.
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The capacity from Durham to Langley Park has decreased just saying, the 13 used to be every 30 minutes (now hourly) all operated by full size buses.