The Railway Bus Services came about as a result of SNCF's decision to close a number of rural lines in the 1970s. TER services and a number of TransBigorre routes are operated plus a full range of excursions from Lourdes, where the company has its own bus station and offices at Place Paradis. Cariane livery is not carried - fleet colours are red, various shades of grey, and white, with large red TPR fleetnames. Renault FR1s, though there are some older Renaults as well. TPR's main service is the TransBigorre route to Lourdes.
Livery is white with a large fleetname in poppy red and yellow.
Recent deliveries have been Castrosua DP55D-bodied Iveco EuroRider 29 buses for TransBigorre services. SALT also operates part of the Alezan network in Tarbes using Renault minibuses. Fleet livery is white, blue and yellow. Also of interest are a similar number of Renault PR180.2 articulated buses, the more recent of which have Safra bodywork, as do a large proportion of the rigid Renault PR100s which form the bulk of the STAP fleet. STAP still has three rigid Berliet two-door citybuses in service, and a small number of minibuses is operated, these being both Renault Masters and Heuliez GX17s.