Edinburgh Trams are to run every five minutes during the morning and evening rush hours to help cater for higher demand.
The move follows a successful trial carried out in July to check that there were no impacts on traffic flows from the increased frequency of the service.
From today the service will run every five minutes from 7.30am to 9.30am and 4.30pm to 6.30pm rather than current frequency of eight to ten minutes.
The change means there will be an extra three return journeys during both the morning and evening rush hours, providing a total of 1,500 additional passenger spaces.
Lea Harrison, General Manager, 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.”
George Lowder, Chief Executive of Transport for Edinburgh, said: “We are very pleased to make this change.
“A lot of work has gone into making sure the new journeys would integrate seamlessly with other traffic and I appreciate the efforts that all the staff at Edinburgh Trams and City of Edinburgh Council have put into this.
“We will maintain our focus on improving the service on the existing line for the benefit of commuters, residents and visitors alike.”
Last year saw more than 5.38 million passengers use the tram service in the city, a 9.3% increase on the year following launch, when 4.92 million passengers were carried.
Edinburgh Trams has a fleet of 27 and currently employs 130 staff