This presentation compares the currently available test methods and boundary conditions with traffic situations typically occurring in Korea. From the findings, it is concluded that
  • The test method should comprise a component under acceleration in addition to standstill and cruise-by (SAE J2889-1);
  • The necessary sound level of AVAS is 55~60dB(A) in cruise and 60~65dB(A) in acceleration. The proposed value for acceleration is considered as minimum;
  • The AVAS should be active up to a velocity of 25km/h; and
  • Frequency shift measurement also can be conducted outdoors.

Comments

ISO/SAE considered the inclusion of acceleration and outdoor-testing. Eventually this idea was dropped due to poor repeatability.