Regulations from the MSA Blue Book for Road Rallying.
In addition to complying with Section J all cars competing in Road Rallies must comply with the appropriate part of the following:
18.1. Bodywork must represent the manufacturer’s original profile and may include any optional extras available directly from the manufacturer.
18.1.1. Bumpers must be fitted.
18.1.2. Paintwork must be one colour or manufacturer’s original colour scheme. No primer is to be visible.
18.1.3. Vehicles must not have wheel arch extensions, unless fitted by the manufacturer as a standard item to the body shape.
18.1.4. All major internal trim as fitted to the body type by its original manufacturer when offering it for sale must be retained. This trim will include headlinings, inside door panels, carpets and rear seats.
18.1.5. Front seats may be improved or replaced.
18.1.6 The trim, including the rear seat may be cut to allow the fitting of a safety cage.
18.1.7. If equipped with a non standard fuel tank it must be separated from the driver/passenger compartment by a protective bulkhead of non-flammable material preventing the passage of fluid or flame.
18.1.8. Full harness seat belts may be fitted.
18.1.9. Guards may be fitted beneath the vehicle to provide protection from damage.
Engines and Transmissions
18.2. Vehicle engines must have:
18.2.1. A maximum of four cylinders.
18.2.2. A maximum of two carburettor chokes (two single or one double).
18.2.3. A maximum of one camshaft per bank of cylinders.
18.2.4. Engines with more than one camshaft per bank of cylinders may be used providing that they were originally fitted with fuel injection and that the fuel injection system complete with plenum chamber and
throttle body is retained unmodified.
18.2.5. For diesel and petrol engines under 1500cc actual capacity, forced induction is permitted providing that the complete original induction system is retained unmodified, other than the replacement of the air filter element
18.3.1. Fuel injection may be fitted where it was standard equipment by the manufacturer for that engine type and where the original plenum chamber and throttle body is retained for that engine type.
18.3.2. A standard Wankel unit will be considered as three cylinders – twin Wankel units are prohibited.
18.3.3. Engines must comply with the silencing levels G.11.1, J.5.17 and 4.1 and have induction air filter elements fitted that ensure the vehicle complies with noise regulations J.5.17.
18.3.4. Only H shift pattern manual transmissions are permitted. The gear lever must remain the only means of changing gear unless an alternative method was originally fitted by the vehicle manufacturer as standard. Automatic transmissions are permitted provided that they are in their original configuration as fitted by the manufacturer to that specific vehicle model.
18.3.5. The number and location of the driven wheels must remain as original to the model of car.
Wheels and Tyres
18.4. Wheels and tyres are free but must fit within the standard unmodified wheel arch.
18.4.1. Vehicles must be fitted with tyres that are always legal for use on the public highway.
18.4.2. All moulded slick tyres are prohibited including those listed as FIA Approved Moulded Slick Tyres.
18.4.3. Vehicles must have all spare wheels securely fastened in position and must not be fitted with spiked or studded tyres or any non-skid attachments, other than chains if permitted by SR
18.5. Vehicles must have a maximum of four forward facing beams, as well as side and indicator lights, unless further restrictions are specified in SRs.
18.5.1. Light pods are not permitted.
18.5.2. A headlamp must provide the main beam and dipped beam functions.
18.5.3. An auxiliary lamp provides a beam other than that provided by the headlamp. With the exception of cars built before 1st January 1947 the maximum width of the lamp body of any auxiliary lamp must not exceed 222mm.
8.5.4. A headlamp may consist of a single reflector with a dual filament bulb, or separate reflectors each with single filament bulbs providing the functions of main beam and dipped beam separately. This will be considered as equivalent to a single dual filament headlamp unit. Lamp units comprising two reflectors where one is fitted with a dual filament bulb will be considered as a combined headlamp and auxiliary lamp. In this instance therefore no additional auxiliary lamps may be fitted.
18.5.5. Auxiliary lamps unless fitted as standard equipment using gas discharge or LED technology are not permitted and gas discharge or LED headlamp units may not be retro fitted.
18.5.6. Auxiliary lights must not be used in neutral sections except in poor visibility as permitted by law.
18.5.7. Where more than four beams are fitted as standard, only four may be used and the remainder must be rendered unusable for the duration of the event.
18.5.8. Vehicles must have all lights fitted and used according to motor vehicle lighting regulations.
18.5.9. External navigational or Marshal lights are not permitted.
18.6. The vehicle must be currently registered and taxed as a Private Car and comply with all statutory regulations as to the Construction and Use regulations (especially regarding brakes, lighting, tyres, warning
devices, rear view mirrors, silencers, speedometers, wings and windscreens).
18.6.1. Vehicles may not use racing style numbers, nor have any advertising except for event sponsor decals which must be incorporated within the rally plate.
18.6.2. They should be equipped with an effective method of stopping fuel supply, operable by the Driver when normally seated (the ignition switch would normally cover this requirement) and must use pump
fuel as defined in Nomendature and Definitions.
18.6.3. Brakes are free but must comply with Construction and Use Regulations. A hydraulic handbrake is permitted. This must incorporate the existing manufacturers handbrake lever, mounting position and pivot point.
18.6.4. For all road events, the use of global positioning systems or any other type of position determining device is prohibited and will be penalised in accordance with 13(p).
Exceptionally, the SRs for Navigation Rallies and Navigational Scatters may Permit their use.