Mâcon uses the urban transport service Tréma, run by the organising transport authorities, the SITUM (Inter-communal City Transport Union of Mâconnais – Val de Saône). The SITUM currently consists of 3 members: CAMVAL (Agglomeration Community of Mâcon-Val de Saône) (26 communes) and the Chaintré and Crèches-sur-Saône communes. The Urban Transport Area of the SITUM extends over 28 communes in total.
On the evening of 30 June 2009, the Mâcon Bus services ceased operation. This was due to the public service delegation contract between the SITUM and the Mâcon Bus company (a subsidiary of Transdev), operating the network since 1987, not being renewed at the last call for bids. So since 1 July 2009, the company CarPostal Mâcon (CarPostal France's subsidiary) has been providing city transport services on the network renamed Tréma.
The network Tréma, restructured on 31 August 2009, made the following bid:
urban lines (A to G) going through Mâcon, Crèches-sur-Saône, Sancé, Saint-Laurent-sur-Saône, central Charnay-lès-Mâcon and Mâcon-Loché TGV train station on a regular basis.
a transport service requested by TrémA'Fil to operate in the other communes of the SITUM area, to increase the frequency of the less busy regular lines (F and G) and to offer a service for each city stop in the morning before the beginning of services for scheduled lines and in the evening after the end of the services.
school lines named TrémA'Scol.
Mâcon is run by the network Buscephale of Saône-et-Loire’s local council.