Transport vehicle dimensions are important when planning machinery movement, site access, loading areas, buildings, roads and other engineering facilities. This page brings together useful dimensional information for freight containers, road vehicles, parking and access, and rail transport.
Some of the information below is standardised, while other values are typical vehicle dimensions or historical planning data. These distinctions are identified within each section.
ISO freight containers, also known as intermodal containers, are designed for transport by more than one mode, such as road, rail and ship. Their standardised external dimensions and corner arrangements allow containers to be transferred efficiently between transport systems.
The current dimensional standard is ISO 668:2020 – Series 1 freight containers – Classification, dimensions and ratings, together with ISO 668:2020/Amd 1:2022.
The earlier ISO 668:1995 edition previously referenced by RoyMech is withdrawn.
| Nominal Container Size | Approximate External Length | Standard External Width | Common External Height |
|---|---|---|---|
| 20 ft | 6.06 m | 2.438 m (8 ft) | 2.591 m (8 ft 6 in) |
| 40 ft | 12.19 m | 2.438 m (8 ft) | 2.591 m (8 ft 6 in) |
| 40 ft High Cube | 12.19 m | 2.438 m (8 ft) | 2.896 m (9 ft 6 in) |
The dimensions above are useful nominal engineering reference values. ISO 668 should be consulted where the precise dimensional tolerances, container classifications and ratings are required.
The original RoyMech reference gives a typical rolling-stock vehicle as approximately:
The following dimensions are retained as useful preliminary planning values. Actual parking-space requirements vary with the application, local authority, development standard and accessibility requirements.
| Parking Arrangement | Typical Planning Space |
|---|---|
| Roadside parking | 6.6 m long × 2.7 m wide |
| Single parking bay / space envelope | 4.8 m long × 3.6 m wide |
The following axle and gross-weight figures are retained from the original RoyMech transport reference. Vehicle regulations depend upon vehicle type, axle configuration, axle spacing and operating conditions, so the figures should not be interpreted as a complete statement of current UK road vehicle law.
| Vehicle / Axle Arrangement | Reference Gross Weight |
|---|---|
| 2 axles | 18,000 kg |
| 3 axles | 26,000 kg |
| 4 axles | 32,000 kg |
| 5 axles | 40,000 kg |
| 6 axles | 44,000 kg |
The original RoyMech reference notes a clearance height of 4.95 m (16 ft 3 in) in connection with bridge-height information. Treat this as historical transport-planning information rather than as a guaranteed clearance rule for a proposed vehicle route.
For movement of tall equipment or abnormal loads, the actual route and individual structures should be checked before transport.
The following vehicles were included in the original RoyMech page as examples of the considerable dimensional variation between passenger vehicles. They represent particular generations of vehicle and should not be interpreted as dimensions for current models carrying the same name.
| Example Vehicle | Length | Width | Height | Approx. Mass |
|---|---|---|---|---|
| BMW 525 4-door | 4.84 m | 1.84 m | 1.46 m | 1560 kg |
| Ford Fiesta | 3.918 m | 1.683 m without mirrors 1.905 m with mirrors |
1.468 m unloaded | 1100 kg |
| Range Rover (2009) | 4.972 m | 2.193 m over mirrors | 1.903 m | 2717 kg (diesel) |
The following values are useful for preliminary access and site-layout studies. They represent typical vehicles rather than regulatory maximum dimensions.
| Vehicle | Weight (kg) |
Length (m) |
Width (m) |
Height (m) |
Turning Circle (m) |
|---|---|---|---|---|---|
| 3.5 tonne van | 3,500 | 5.5 | 2.1 | 2.6 | 13.0 |
| 7.5 tonne van | 7,500 | 6.7 | 2.5 | 3.2 | 14.5 |
| Single-deck bus | 16,260 | 11.6 | 2.5 | 3.0 | 20.0 |
| Refuse truck | 16,260 | 8.0 | 2.4 | 3.4 | 17.0 |
| Axle tipper | 16,260 | 6.4 | 2.5 | 2.6 | 15.0 |
| Van / tipper <16.3 tonnes | 16,260 | 8.1 | 2.5 | 3.6 | 17.5 |
| Skip loader | 16,260 | 6.5 | 2.5 | 3.7 | 14.0 |
| Fire engine | 16,260 | 7.0 | 2.4 | 3.4 | 15.0 |
| Articulated bus | 17,500 | 18.0 | 2.6 | 3.1 | 23.0 |
The duplicate axle-tipper row in the original table has been removed.
The following values are retained as preliminary planning dimensions rather than mandatory minimum requirements:
| Access Feature | Reference Dimension |
|---|---|
| Garage access | 2.15 m wide |
| Domestic drive | 2.5 m wide |
| Cycle lane | 1.25 m wide; 1.5 m preferred in the original reference |
| Vehicle lane | 2.75 m wide; 3.0 m preferred in the original reference |
The original RoyMech reference gives typical freight vehicle widths of approximately 2.5 to 2.7 m and heights above rail level of approximately 3.3 to 3.7 m. Wagon platform heights are given as approximately 1.4 to 1.8 m.
A maximum load of approximately 66 tonnes was quoted for a four-wheel flat wagon. These figures should be regarded as historical or typical values rather than a current UK rail loading gauge or vehicle specification.
The standard track gauge used on the principal British railway network is 1,435 mm (4 ft 8½ in), measured between the inner faces of the rails. The same standard gauge is widely used internationally.
Vehicle dimensions are often needed at an early stage of engineering projects to establish access routes, door openings, loading areas, turning space, equipment transport arrangements and structural clearances.
Typical dimensions are useful for preliminary layouts, but the design vehicle should ultimately be identified. Critical dimensions should then be obtained from the vehicle or equipment manufacturer, operator, applicable standard or relevant transport authority.