Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Changes in area of zones affected by road noise according to studies from the years 2014 and 2020 (average values)
| No | Feature | Acoustic range [dB] | Code | Area [m2] | WCAR Index [-] | |
|---|---|---|---|---|---|---|
| 27th May 2014 Tuesday | 9th June 2020 Tuesday | |||||
| 1. | Area exposed to road noise according to the index | 40–45 | A40–45 | 1058 | 10981 | 0.196 |
| 2. | 45–50 | A45–50 | 17143 | 15088 | −0.041 | |
| 3. | 50–55 | A50–55 | 15294 | 12858 | −0.048 | |
| 4. | 55–60 | A55–60 | 10575 | 6779 | −0.075 | |
| 5. | 60–65 | A60–65 | 5301 | 3744 | −0.031 | |
| 6. | 65–70 | A65–70 | 1338 | 1259 | −0.002 | |
| 7. | Percentage of area exposed to above-normal noise LAeqD | >65 | PA>65 | 2.64% | 2.48% | |
| 25th May 2014 Sunday | 16th May 2020 Saturday | |||||
| 8. | Area exposed to road noise according to the index | 40–45 | A40–45 | 9951 | 18237 | 0.163 |
| 9. | 45–50 | A45–50 | 13502 | 10857 | −0.052 | |
| 10. | 50–55 | A50–55 | 12899 | 10589 | −0.046 | |
| 11. | 55–60 | A55–60 | 9416 | 7219 | −0.043 | |
| 12. | 60–65 | A60–65 | 4053 | 3109 | −0.019 | |
| 13. | 65–70 | A65–70 | 888 | 698 | −0.004 | |
| 14. | Percentage of area exposed to above-normal noise LAeqD | >65 | PA>65 | 1.75% | 1.38% | |
Changes in areas exposed to road noise described by LN and LDWN for the years 2012 and 2017
| No. | Features | Range [dB] | Code | Area [m2] | Index WCAR [-] | |
|---|---|---|---|---|---|---|
| 2012 | 2017 | |||||
| Area exposed to road noise in accordance with LN | 45–50 | ALN45-50 | 1,018 | 12,804 | 0.232 | |
| 50–55 | ALN50-55 | 16,461 | 16,380 | −0.002 | ||
| 55–60 | ALN55-60 | 23,634 | 13,613 | −0.198 | ||
| 60–65 | ALN60-65 | 9,596 | 7,293 | −0.045 | ||
| 65–70 | ALN65-70 | 0 | 619 | 0.012 | ||
| Area exposed to excessive noise, LN | >59 | A>59LN | 27.8% | 20.9% | ||
| Area exposed to road noise in accordance with LDWN | 50–55 | ALDWN50-55 | 0 | 750 | 0.015 | |
| 55–60 | ALDWN55-60 | 1,086 | 17,918 | 0.332 | ||
| 60–65 | ALDWN60-65 | 23,903 | 15,974 | −0.157 | ||
| 65–70 | ALDWN65-70 | 18,616 | 10,704 | −0.156 | ||
| 70–75 | ALDWN70-75 | 7,104 | 5,387 | −0.034 | ||
| Area exposed to excessive noise, LDWN | >68 | A>68LDWN | 28.1% | 18.8% | ||
Results of the LAeq analyses
| Site | 25 May 2014 | 27 May 2014 | 16 May 2020 | 9 June 2020 |
|---|---|---|---|---|
| LAeq | [dB] | |||
| 1 | 59.2 | 60.1 | 57.3 | 56.8 |
| 2 | 59.3 | 61.0 | 56.6 | 60.7 |
| 3 | 60.0 | 62.2 | 60.1 | 60.4 |
| 4 | 56.1 | 57.2 | 54.1 | 54.9 |
| 5 | 55.7 | 56.4 | 56.2 | 52.3 |
| 6 | 55.1 | 55.6 | 52.0 | 54.6 |
| 7 | 51.9 | 52.3 | 50.5 | 52.2 |
| 8 | 52.0 | 52.4 | 53.4 | 50.6 |
| 9 | 50.6 | 52.9 | 48.4 | 49.4 |
| 10 | 52.4 | 52.6 | 47.9 | 52.8 |
| 11 | 50.0 | 51.2 | 44.2 | 49.3 |
| 12 | 49.9 | 50.9 | 47.7 | 47.5 |
| 13 | 49.1 | 50.3 | 47.0 | 47.2 |
| 14 | 47.0 | 49.9 | 44.0 | 46.6 |
| 15 | 46.1 | 49.1 | 43.8 | 46.5 |
| 16 | 45.2 | 48.7 | 43.7 | 45.3 |
| 17 | 45.7 | 48.2 | 43.8 | 44.9 |
| 18 | 44.5 | 46.0 | 43.2 | 44.1 |
| 19 | 43.3 | 45.6 | 43.1 | 43.2 |
| 20 | 42.9 | 44.6 | 42.0 | 40.7 |
| A | 66.1 | 67.3 | 67.3 | 72.4 |
| B | 71.1 | 71.3 | 71.1 | 71.7 |
| C | 72.9 | 72.6 | 72.4 | 74.1 |