Untitled - Adif

122c. Train formation, excluding operationson rolling stock which correspond tothe railway undertaking.d. Maintenance and other technicalinstallations.e. Loading terminals and marshallingyards.2. ADIF may only reject demands from railwayundertakings if viable alternatives exist inmarket conditions. The above alternativeswill be understood to exist when othercompanies supply the same services inconditions of sufficient quantity, quality andfrequency to attend to existing demand.SUPPLEMENTARY SERVICES (Art. 54)1. Supplementary services are those ADIFmay offer Railway Undertakings, beingobliged to supply them to any who requestthem. Such services may include:a. Supply of traction current.b. Pre-heating of passenger trains.c. Supply of fuel, shunting services andany other supplied at installationswhere access services are given.2. ADIF will have to deal with requests forsupplying these types of services madeby any railway undertaking, pursuant toobjective and non-discriminatory criteria.ANCILLARY SERVICES (Art. 55)1. Ancillary services are those the railwayundertakings may request of ADIF or otheroperators, without ADIF being obliged toprovide them. These services include thefollowing:a. Telecommunication network access.b. Supply of supplementary information.2. ADIF will supply these services on a freecompetition basis.With respect to Additional and Supplementaryservices, the corresponding Charges will beestablished in accordance with the type ofactivity, their involvement in the railway systemand the corresponding cost coverage involvedin supplying the service.The supply of Ancillary services by ADIF will beformalised with requesting companies on thebasis of specific prices to be agreed in eachcase.d. Specific services to check dangerousfreight transport and to assist specialtrain traffic.