When the bus is in-statics, the normal static condition is tested as well as the rear wheelset with gear-power being raised up.

• 振动源及噪音源测试在比较相同引擎转速下，车辆在不同档位（亦即变速箱）及不同行驶状况（亦即路面）下，探讨车内噪音与振动之影响。