Class 230

• LNR's units as diesel-battery hybrids (general description)
• Height 12 ft 2 in (3.703 m; Wikipedia): no Class 230 drawing was found, so the drawing raises the D78's heights by 73 mm to match it. GWR's compliance submission (DfT, January 2026) gives 230001's nominal floor as 3 ft 11 in (1,190 mm) above rail (from Vivarail's drawing VR-0000-0112_02), and says the step position for getting on and off 'has not changed since original build', when the cars were D78 stock, which argues against a raise; London Underground's D78 sheet prints no floor height and draws no floor (its side view puts the doors' foot about 3 ft 7 in (1,094 mm) above rail), so the drawn heights stay as they are until a drawing settles them (set T12F, Kyle, 29 October 2026, question 8)
• Car lengths 61 ft 2 in and 60 ft 4 in (18.652 and 18.399 m; Wikipedia; the D78 bodies plus 280 mm between cars)
• The centre car: a former D78 trailer or non-driving motor (their sides are the same); drawn as the trailer
• Doorways: drawn as the D78's four per side; the one behind each cab is marked for crew and emergencies only, and whether a doorway was removed for the universal toilet isn't shown by any source found
• The new front, deflector, window rubbers and colours are from photographs; the underframe box and the gangways between the cars are placeholders (no source gives their layout or size)
• The driver's door (1 ft 11 in to 4 ft 1 in (590-1,250 mm)) and its window (2 ft 3 in to 3 ft 9 in (680-1,140 mm)), and 230001's narrow window (6 ft 2 in to 7 ft 5 in (1,890-2,250 mm)): placed from photographs by perspective, to about 100 mm; their heights are the other doors' and windows'
• The underframe: positions along the car to about 300 mm (each from one photograph, the equipment's set-in estimated), heights to about 100 mm; both DM layouts are each unit's right side, put on the drawing's cab-left DM, whose left side no photograph shows; GWR's centre car is drawn as a dark mass because no photograph shows its equipment; TfW's DMB is drawn as the DM, but the only photograph of one (its left side, 2020) shows no pale boxes
• Transport for Wales: no exterior photograph from 2025-26 was found; the livery is drawn from 2024 photographs
• Transport for Wales: the two driving cars are told apart on photographs of 300009, 300007, 300110 and 300107 (2023-24); that the 3001xx car's plated doorway is for the toilet, and which car faces which end of the line, aren't published
• Transport for Wales: colours: the grey is TfW's paint reference (NCS S 3000-N, as drawn on the 231), which lit panels on three photographs agree with; the red is TfW's paint reference too (RAL 3020, as on the 231), which the doors agree with on four photographs when read against the grey beside them; the roof drawn in the doors' red
• Transport for Wales: the 3001xx car's left side has a fixed window where its second doorway was (three photographs, 2024); its width, about that of a door window, is not measured, and that side isn't drawn
• The years of the former liveries come from Wikipedia's class article and the other sources listed, and haven't been checked against a second source.

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