Diesel Multiple Unit (DMU) Train – S8 Commuter Pack

Mobile-optimized 3-car Diesel Multiple Unit (DMU) train set. Features 3 LODs, full PBR textures, pre-configured LODGroups, and ready-to-use URP prefabs.

TECHNICAL DETAILS:

• Number of Vehicles: 3 standalone coupled rail vehicles

  - S8 Driving Power Car (with cab, headlights & engine compartment)

  - S8 Intermediate Trailer Coach (passenger coach)

  - S8 Driving Trailer (rear cab with tail markers & buffers)

• Triangle Counts (LOD0 / LOD1 / LOD2):

  - Driving Power Car: 63,944 / 31,624 / 12,596 triangles

  - Trailer Coach: 39,492 / 21,396 / 8,460 triangles

  - Driving Trailer: 47,324 / 24,524 / 9,480 triangles

  - Complete 3-Car Formation: 150,760 (LOD0) / 77,544 (LOD1) / 30,536 (LOD2)

• Level of Detail (LOD):

  - Yes: 3 levels per vehicle (LOD0, LOD1, LOD2)

  - Pre-configured into Unity LODGroup components on all prefabs

• Number of Prefabs: 3 ready-to-use vehicle prefabs + 1 coupled formation demo

• Number of Materials:

  - 5 material types per vehicle (15 materials total in package)

  - Materials: Body Painted Metal (PBR), Window Glass, Decals, Headlight Emissive, Tail Marker Emissive

• Texture Specifications:

  - Texture Resolutions: 2048x2048 (Body PBR maps), 1024x1024 (Decal Atlas)

  - Texture Formats: PNG (True Color / Linear for data maps)

  - Map Types Included: 

      - BaseColor (Albedo)

      - Normal (Tangent-space normal map)

      - MetallicSmoothness (Combined: Red = Metallic, Alpha = Smoothness)

      - Ambient Occlusion (Cavity / contact shading)

      - Emission (Lamps & markers)

      - Decal Atlas (Transparent PNG with editable alpha)

• Scale & Coordinate Standards:

  - Real-world Metric scale (1 unit = 1 metre)

  - Orientation: Y-up, Positive Z-forward

  - Pivot Origin: Vehicle center at rail head level (Y = 0)

  - Dimensions per vehicle: Length 19.812 m, Width 2.920 m

  - Coupler Spacing: Standardized 21.30 m between vehicle origins (Sockets at Y = 1.13 m, Z = ±10.65 m)

• Rigging & Animation:

  - Animated: No (No baked clips or rigs included)

  - Hierarchical Animation Pivots: Yes (Clean named parent transforms ready for scripting / Timeline)

    - 8 Independently parented wheels per car (Local X-axis rotation, radius 0.493 m)

    - 2 Steering bogies per car (Local Y-axis pivot for curved tracks, centers at Z = ±6.60 m)

    - Sliding passenger doors (Local Z-axis travel)

    - Wipers and couplers

• UV Mapping:

  - Non-overlapping atlas layout for body components

  - Separate transparent decal overlay for custom numbers and insignia

• Supported Render Pipelines:

  - Universal Render Pipeline (URP): Default (Pre-configured URP/Lit materials)

  - Built-in Render Pipeline: Supported (Requires standard shader reassignment)

  - High Definition Render Pipeline (HDRP): Supported (Via Unity Render Pipeline Material Converter)

• Documentation:

  - Yes: Included offline user manual in both PDF (Documentation.pdf) and RTF (Documentation.rtf) formats with technical coordinate reference.

A complete 3-car Diesel Multiple Unit (DMU) commuter train set engineered for mobile games, desktop simulators, and real-time architectural visualization. 

Includes 3 standalone coupled vehicle types—a Driving Power Car, an Intermediate Trailer Coach, and a Driving Trailer—with 3 pre-configured LOD levels (LOD0, LOD1, LOD2) for maximum performance out of the box.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ KEY HIGHLIGHTS

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✔ 3 Full Vehicle Types: Driving Power Car, Trailer Coach, Driving Trailer.

✔ Automatic LODGroups: Pre-configured LODGroup components on all prefabs—zero manual LOD setup required.

✔ Mobile & VR Optimized: Efficient polycounts with aggressive LOD2 reduction for smooth mobile framerates.

✔ Full PBR Material Sets: 2048x2048 textures (Albedo, Normal, Metallic/Smoothness, Ambient Occlusion, Emission).

✔ Animation-Ready Pivots: Unbaked, named pivot hierarchy for 8 rotating wheels, 2 steering bogies, sliding passenger doors, wipers, and couplers.

✔ Universal Render Pipeline (URP): Ships with pre-wired URP/Lit materials (easily convertible to Built-in and HDRP).

✔ Customizable Decal Atlas: 1024x1024 transparent decal sheet for editable class and fleet running numbers.

✔ Ready-to-Use Demo Scene: Fully assembled, coupled 3-car train consist with lighting and camera setup.

✔ Offline Documentation: Includes comprehensive PDF and RTF user manual with coordinate specifications.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ VEHICLE SPECIFICATIONS & TRIANGLE COUNTS

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

• Driving Power Car:

  - LOD0: 63,944 tris

  - LOD1: 31,624 tris

  - LOD2: 12,596 tris

• Intermediate Trailer Coach:

  - LOD0: 39,492 tris

  - LOD1: 21,396 tris

  - LOD2: 8,460 tris

• Driving Trailer:

  - LOD0: 47,324 tris

  - LOD1: 24,524 tris

  - LOD2: 9,480 tris

• Complete 3-Car Consist:

  - LOD0: 150,760 tris | LOD1: 77,544 tris | LOD2: 30,536 tris

• Dimensions & Scaling:

  - Length: 19.81 m per vehicle body

  - Width: 2.92 m

  - Real-world metric scale (1 unit = 1 metre, Y-up, rail-level origin)

  - Standardized coupler distance: 21.30 m between vehicle centers

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ MODULAR ANIMATION PIVOTS

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Each vehicle features dedicated pivot parent transforms ready for your own vehicle controller, Timeline, or Animator:

- Wheels: 8 independently parented wheels (rotate around local X-axis, radius: 0.493 m).

- Bogies: Front and rear bogie pivots (rotate around local Y-axis for curved track navigation).

- Passenger Doors: Independent sliding door assemblies ready for local Z-axis translation.

- Couplers & Wipers: Individual named transforms.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ RENDER PIPELINE COMPATIBILITY

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

- Universal Render Pipeline (URP): Default, ready on import.

- Built-in Render Pipeline: Supported (switch material shader to Standard and re-link textures).

- High Definition Render Pipeline (HDRP): Supported via Unity's Material Converter.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ WHAT'S NOT INCLUDED

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

- Train physics / rail movement scripts (designed to integrate into your existing railway or vehicle system).

- Environment assets or tracks beyond the placeholder demo ground plane.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

✦ SUPPORT & QUESTIONS

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Have questions or need assistance? Contact us via our publisher support page on the Unity Asset Store.