A 16-year-old boy has been arrested in connection with disorder at an Old Firm match.
More Trams To Run During Edinburgh Rush-Hour
Edinburgh trams will now run up to every five minutes during rush-hour periods to help meet rising demand.
Services will run from every five minutes between 7.30am-9.30am and 4.30pm-6.30pm, rather than every eight to ten minutes.
The six extra return journeys provide 1,500 extra seats.
The time change started on Tuesday after a two-week trial found the increased services had no impact on traffic flows.
Edinburgh Trams general manager Lea Harrison said: "The trams have proved very popular since they were introduced, with passenger numbers increasing all the time.
"Although this is a modest increase in our capacity on the line, it is still an important step in increasing the frequency of the service and providing more capacity during peak times so we can help even more people travel along the route.''
The trams carried 5.38 million passengers last year, up 9.3% on the first year of operation in 2014.
They started running in May 2014 after six years of disruption and a long-running dispute between Edinburgh City Council and contractors.
The eventual cost of £776 million was more than double the sum earmarked for the project and the scheme is now subject to a inquiry into why it went over budget and timescale.
The inquiry itself has cost more than £3.7 million so far.
A cheese producer linked to an E.coli outbreak has been told it does not have to destroy stock withdrawn from sale by a food watchdog.
The highest phone box in the UK has been saved from removal following a successful community campaign.
Minimum pricing for alcohol must be brought in as a matter of urgency after judges backed the policy, doctors have said.
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