batteries (110 V on ALe 724 and ALe 582) recharged by 380 V three-phase 70 kVA DC/AC static converters, located on engine units and Le 682 and which supply electric current to auxiliary services. Composition ALe 642 complexes normally consist of two traction units (ALe 642) in multiple control and their trailers (Le 764), interspersed between the two units. One of the two traction units can be replaced by the pilot car (Le 682). The possible compositions are as follows: - ALe 642 + Le 764 + ALe 642 - ALe 642 + Le 764 + ALe 642 - ALe 642 + Le 682 * - ALe 642 + Le 764 + Le 682 * - ALe 642 + Le 764 + Le 764 + Le 682 * (* the Le 682 cab car can be either at the head or tail end of the train, being equipped with a driver's cab and suitable for remote control of the traction units). It is not possible to couple two traction units without intermediate trailers. Allocation The ALe 642 group is assigned to the Pisa depot and operates short-range regional services in Tuscany on routes such as Livorno-Pisa-Pontedera, Pisa-Pontedera, Lucca-Pisa-Pontedera, Pisa-La Spezia, Livorno-Pisa-La Spezia, and La Spezia-Pontremoli. Revamping Between the late 2000s and the beginning of the 2010s, Class 642s have received substantial upgrades in order to improve comfort and extend their service life; new modern seats were installed to replace the original ones, interior's color scheme was slightly changed, electronic screens showing trip info were also added, as well as an improved air conditioning system. In addition to this, all units were fitted with the new SCMT (Sistema Controllo Marcia Treno) safety system, thus making the entire group compliant with the latest safety regulations.. Incidents/Accidents On 25 May 2022, while waiting for departure on La Spezia Centrale platform n°1, ALe 642 044 unit suffered severe damage to its electrical part and interior due to a fire, which has also determined the evacuation of the train station with consequential delays and disruptions. References External links ALe 642 AnsaldoBreda multiple units 3000 V DC multiple units