eSafety Compendium

Elaboration:Aftermarket IVIS in this context is any in-vehicle information or communicationsystem fitted within the vehicle by persons other than the manufacturer (e.g.drivers), after the vehicle has received Type Approval.Detach is defined as to separate from intended fitting or to separate fitting/holderfrom the vehicle.Vehicle in motion in this context is measured by 1g braking deceleration, 0.5gacceleration or a 1g cornering force (based on an extension of the requirements in theDfT CoP Safety of loads on vehicles, 2002). Simple braking and cornering testprocedures are provided in Annex 1 and 2.Relevant Code of Practice:UK Department for Transport’s Code of practice: The safety of loads on vehicles,third addition, 2002.This is intended to apply to loads carried by vehicles such as HGVs but is based on theprinciple that the method of securing a load in place must be sufficient such that it will not movewhen subjected to a 1g braking deceleration, a 0.5g acceleration or a 0.5g cornering force.The limit values are based on the performance of goods vehicles but since cars are capable of agreater dynamic performance than most goods vehicles cornering accelerations of up to 1g are usedwhen applying the principle to passenger cars.Rationale:To ensure that the driver is not distracted by the system, or any components of thesystem, becoming partially or fully detached. This ensures that the driver’s abilityto be in full control of the vehicle is not affected by any sudden movements of thesystem components or any physical obstructions if components fall on the driver,the vehicle controls or in the vehicle foot well.Test procedure 1: Brake Test (DRAFT)Test vehicleThe IVIS must be fitted to the vehicle as it would be in normal service. It ispreferable if the vehicle is fitted with an anti-lock brake system (ABS) to avoidexcess tyre wear.The test vehicle should be either the actual vehicle the system will be fitted to orhave comparable interior structure in the area the candidate system is mounted anda brake system capable of generating a Mean Fully Developed Deceleration(MFDD, defined in UNECE R13) of at least 8 m/s2.Test conditionsThe test should be carried out on a flat smooth asphalt area in good conditionaway from the public road and other personnel or vehicles. The test must becarried out in dry conditions in order to maximise the level of decelerationachieved. Adequate safety precautions must be taken at all times.Page 330 of 490