Test procedure. The engine speed shall be gradually increased from idle to the target engine speed, not exceeding the tolerance band of ±3 per cent of the target engine speed, and held constant. Then the throttle control shall be rapidly released and the engine speed shall be returned to idle. The sound pressure level shall be measured during a period of operation consisting of a maintaining constant engine speed of 1 second and throughout the entire deceleration period. The maximum sound level meter reading during this period of operation, mathematically rounded to the first decimal place, is taken as the test value.
Test procedure. 3.3.1. Each leg assembly shall be maintained (soaked) for four hours prior to the test at a temperature of 22 ± 3 °C and a relative humidity of 40 ± 30 per cent. The soak period shall not include the time required to reach steady state conditions.
Test procedure. 3.3.2.1. The vehicle shall be started up by the means provided for normal use to the driver. The first cycle starts on the initiation of the vehicle start-up procedure.
Test procedure. 3.3.1. Drive the vehicle at a speed not lower than 28 km/h.
Test procedure. The field of vision shall be determined by placing powerful light sources at the ocular points and examining the light reflected on the vertical monitoring screen. Other equivalent methods may be used.
Test procedure. 6.1. Where compliance to the requirements of paragraph 5.1. above is demonstrated by providing all required certificates covering all variants and versions of the IWVTA type, no further testing shall be required for the items covered by these certificates.
Test procedure. 7.1. All measurements, photometric and colorimetric, shall be made:
Test procedure. 5.1.1.2.1. Accelerate the vehicle to a speed 10 km/h higher than the chosen test speed v.
Test procedure. 3.2.1. Sample preparation The manufacturer's bedding procedure shall ensure a minimum of 80 per cent surface contact area without exceeding a surface temperature of 200°C.
