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TNM V2.5 Update Sheet

Technical Manual: Part 2

This graph shows the ratio of energy distribution between the two vehicle sub-sources. The contribution is higher for lower frequencies than higher. The contribution is greater than for medium trucks.
Figure 36. Sound emissions, high/low energy split: Heavy trucks, cruise throttle.

This graph shows the ratio of energy distribution between the two vehicle sub-sources. The contribution is higher for lower frequencies than higher. The contribution is greater than for cruise throttle.
Figure 37. Sound emissions, high/low energy split: Heavy trucks, full throttle.

Updated: 7/15/2011
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