1. PERMISSIBLE SOUND LEVELS
1.1. Limits
1.2. Measuring instruments
1.3. Conditions of measurement
1.4. Method of measurement
1.4.1. . . . . . . . . . ....
1.4.1.1. . . . . . . . . . ....
1.4.1.2. Interpretation of results
1.4.1.2.1. . . . . . . . . . ....
1.4.1.2.2. . . . . . . . . . ....
1.4.1.2.3. . . . . . . . . . ....
Measuring positions for tractors in motion
1.4.2. . . . . . . . . . ....
1.4.2.1. Position of sound-level meter
1.4.2.2. Number of measurements
1.4.2.3. Tractor test conditions
1.4.2.4. Interpretation of results
Measuring positions for stationary tractors