There has been travel chaos on the Glasgow subway during the morning rush after services were suspended.
The outer circle has been suspended due to a signalling fault while there is only a part service running on the inner circle.
The inner circle is running from Shields Road to West Street, Bridge Street and into the city centre only.
Anyone with a valid Subway ticket can travel for free on First buses until the problem is resolved, SPT have said.
The suspension was announced at around 8am on Friday morning.