The B 81500 is a class of hybrid railway multiple unit

Multiple unit

The term multiple unit or MU is used to describe a self-propelled carriages capable of coupling with other units of the same or similar type and still being controlled from one driving cab. The term is commonly used to denote passenger trainsets consisting of more than one carriage...

s built by Bombardier

Bombardier Transportation

Bombardier Transportation is the rail equipment division of the Canadian firm, Bombardier Inc. Bombardier Transportation is one of the world's largest companies in the rail-equipment manufacturing and servicing industry. Its headquarters are in Berlin, Germany....

 for SNCF

SNCF

The SNCF , is France's national state-owned railway company. SNCF operates the country's national rail services, including the TGV, France's high-speed rail network...

 and used on the TER network. It is capable of operating on diesel

Diesel engine

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 power as well as a 1.5 kV DC electricity supply

Railway electrification system

A railway electrification system supplies electrical energy to railway locomotives and multiple units as well as trams so that they can operate without having an on-board prime mover. There are several different electrification systems in use throughout the world...

. It has been in operation since 2005 on the TER Aquitaine

TER Aquitaine

TER Aquitaine is the regional rail network serving the Aquitaine région, France.- Rail :- Road :* Agen - Villeneuve-sur-Lot* Ossès - Saint-Étienne-de-Baïgorry* Dax - Mauléon* Bordeaux - Pauillac - Le Verdon* Mont-de-Marsan - Hagetmau...

, TER Bourgogne

TER Bourgogne

TER Bourgogne is the regional rail network serving the Burgundy region of France.- Rail:-Road:* Autun - Le Creusot-TGV* Paray-le-Monial - Le Creusot-TGV* Châtillon-sur-Seine - Montbard* Corbigny - Avallon - Montbard* Saulieu - Montbard...

, TER Centre

TER Centre

TER Centre is the regional rail network serving Centre région of France.- Rail:-Road:* Tours - Loches - Châteauroux* Bourges - Issoudun - Châteauroux* Vendôme-TGV - Château-Renault* Chartres - Brou - Courtalain - Droué* Dreux - Chartres - Orléans...

, TER Champagne-Ardenne, TER Languedoc-Roussillon, TER Limousin

TER Limousin

TER Limousin is the regional rail network serving Limousin région, France.- By train :-By bus:* Limoges - Uzerche - Tulle* Limoges - Aubusson - Felletin* Ussel - Felletin* Ussel - Auzances - Montluçon* Montluçon - Aubusson - Felletin...

, TER Midi-Pyrénées, TER PACA, TER Pays de la Loire

TER Pays de la Loire

TER Pays de la Loire is the regional rail network serving Pays de la Loire, France.- Train :- Bus :*Redon-Saint-Nazaire*Nantes-Poitiers*Nantes-Challans-Saint-Jean-de-Monts*Nantes-Noirmoutier*Nantes-Saint-Jean-de-Monts*Fontenay-le-Comte-Niort...

, and TER Rhône-Alpes lines.