Page 190 - AJWEP-22-6

Tsankov, et al.

Figure 3. Distribution of the existing street and park luminaires by type and power rating (lamp type, number,
and percentage share)
Abbreviations: CFL: Compact fluorescent lamp; HPMV: High-pressure mercury vapor; HPS: High-pressure sodium;
LED: Light-emitting diode; MHL: Metal-halide lamp.

with current European standards. The standardization
of the proposed street lighting designs in Pavlikeni and
Byala Cherkva was carried out in accordance with the
European street lighting standard BDS EN 13201:2016.
24
According to this standard, traffic on the streets in both
towns primarily involves motorized vehicles, along
with pedestrians and slow-moving vehicles, particularly
on certain street types.
The lighting classification of the streets is defined as
follows:
(i) M4: Regional arterial roads.
Figure 4. Installed electric power in existing street (ii) M5: Collector streets.
and park lighting systems in the settlements of the (iii) M6: Service (local residential) streets.
Pavlikeni municipality
(iv) P6: Pedestrian streets, streets used by slow-moving
vehicles, or short street segments unsuitable for
luminance-based classification.
The lighting classification of the street network in
Pavlikeni in accordance with BDS EN 13201:2016 is
illustrated in Figure 6.
Table 2 presents the standard values for the
quantitative and qualitative indicators of street
lighting according to BDS EN 13201:2016. For
classes M4, M5, and M6, the quantitative photometric
parameter is the average road surface luminance
(L ), while the qualitative parameters include
avg
Figure 5. Monthly electricity consumption over overall uniformity (Uₒ), longitudinal uniformity
1 year for street and park lighting in the Pavlikeni (Uₗ), threshold increment (f ) as an indicator of
TI
municipality glare, and the average horizontal illuminance of the
surrounding area (R ). 24
EI
calculations to be conducted specifically for these two For streets and areas classified under lighting
urban areas within the municipality. class P6, the standardized parameters are based on the
Before conducting lighting design calculations, the average maintained illuminance (E ) and the minimum
avg
urban street network must be classified in accordance maintained illuminance (E ), as shown in Table 3. 24
min

Volume 22 Issue 6 (2025) 184 doi: 10.36922/AJWEP025310242