Environmental Statement volume 4 - Chiltern Evergreen3

part of the baseline between Oxford station and the Oxford North Junction.These freight trains may haul up to 26 bogie container wagons. Nationalplanning is moving towards 30-wagon trains however, and this length of trainhas been adopted in this assessment.At present, up to one stone train is expected to use the line each day toBanbury Road, one train most days to Bicester MoD and one train, withoccasionally two, to the Calvert waste terminal. One train each day to Calverthas been adopted as a worst-case assessment (as discussed in Section 2.1). Thisis summarised in Table D5.1 below.Table D5.1Current Freight MovementsTrain movements perday from the NorthJunction to BanburyRoad stone sidings(route section A-B plusPeartree)Train movements per dayfrom Banbury Roadsidings to MOD sidings(route section C minusPeartree)Stone Train 2 0 0Trains to 2 2 0Bicester MoDCalvert Waste 2-4 2-4 2-4TerminalTotal 6-8 4-6 2-4Train movements perday from the MODsidings to Bicester(route section D)For Phase 1 (the Chiltern Scenario), this service frequency will remain thesame. Presently, one freight train runs at night-time (at approximately 05.30),taking waste from Calvert . All other freight trains run during the day. This isexpected to continue. For Phase 2, the service frequency may increase on thesection of line between Bicester and the Oxford North Junction, and mayoperate throughout the night, and has been modelled as doing so. Themaximum number of freight paths (time slots where freight trains could run),is one per hour in each direction, however experience of freight path usagesuggests that this would be an unrealistic assumption. Therefore, a likelyfrequency of freight trains has been assumed based on the current freightoperations through Oxford, as follows:During the busiest daytime period, 53 freight paths exist and 28 freighttrains run, producing a utilisation factor of 53%. This utilisation figurehas been used to produce a figure of 17 freight trains per day (afterrounding up to the nearest whole number). During the busiest night-time period, 32 freight paths exist and 14trains run, producing a utilisation factor of 44%. This has beenrounded up to 50%, which gives a value of eight freight trains pernight which has been used in this assessment.Freight trains will have a maximum speed of either 97 kph or 121 kphdepending on the class of engine. A top speed of 121 kph has been usedthroughout (where line speeds and limits permit). Line speed limits along theENVIRONMENTAL RESOURCES MANAGEMENTD-27CHILTERN RAILWAYS