Shell General Regulations

These are the general safety Regs that every member must consider when designing

Maximum allowable height-to-track-width ratio

$$\le 1.25$$

Minimum roll bar clearance above the driver's helmet

$> 50\,\text{mm}$, extending beyond the driver's shoulders

Permissible actuation mechanism for prototype braking systems

Hydraulic circuits only (cables and wires are prohibited)

Minimum surface area and width for the front brake pedal

Minimum surface area of $10\,\text{cm}^2$ and a minimum width of $3\,\text{cm}$

Minimum frontal crumple zone depth ahead of the driver's feet

$100\,\text{mm}$ between the front vehicle body and the driver's feet

Minimum corner radius for exterior vehicle body points

$50\,\text{mm}$, unless covered with foam or deformable material

Minimum surface area required for each rear-view mirror

$2500\,\text{mm}^2$ (e.g., $50\,\text{mm} \times 50\,\text{mm}$)

Minimum mounting point configuration for the driver safety harness

Five mounting points attached to the vehicle's main structure, locking into a single buckle

Minimum load capacity required for each safety harness mounting point

Must withstand a minimum force of $200\,\text{N}$ in any direction

Maximum allowable unassisted driver egress time while fully harnessed

Less than $10\,\text{s}$

Driver compartment emergency opening requirement

Operable via a single intuitive action from both inside and outside without tools (adhesive tape is prohibited)

Safety requirements for the engine compartment bulkhead

Must protect the driver from open flames, block manual access to the energy compartment, and seal all pass-throughs with grommets and fire-resistant materials

Maximum allowable vehicle height

$$< 1000\,\text{mm}$$

Minimum vehicle track width and measurement reference

$\ge 500\,\text{mm}$, measured between the midpoints where the tyres of the outermost wheels touch the ground

Minimum allowable vehicle wheelbase

$$\ge 1000\,\text{mm}$$

Maximum allowable total vehicle width

$$\le 1300\,\text{mm}$$

Maximum allowable total vehicle length

$$\le 3500\,\text{mm}$$

Maximum allowable vehicle weight excluding the driver

$$\le 140\,\text{kg}$$

Restriction on achieving required vehicle body dimensions

Must not be achieved through design singularities such as 'stuck-on' appendages or cut-outs

Maximum allowable vehicle turning radius and measurement reference

$\le 8\,\text{m}$, measured from the centre of the circle to the external wheel of the vehicle

Dynamic arc test requirement for vehicle turning capability

The external wheel must be able to follow a $90^\circ$ arc of $8\,\text{m}$ radius in both directions

Steering system clearance and interference restriction

Must be designed to prevent any contact between the tyre and the vehicle body or chassis