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Tsankov, et al.
Energy performance indicators (BDS EN 13201:2016) D E , D P , W/ kWh/ (lx.m 2 ) m 2 .г 0.833 0.016
R EI ≥0.30 Surround ratio (R EI ) 0.57
f TI ≤15% Threshold increment (glare index; f TI ), % 15
Table 5. Achieved lighting performance indicators for a sample street of class M4 in the town of Pavlikeni
13201:2016) Standard lighting parameters for class M4 (BDS EN U l ≥0.60 Achieved lighting performance indicators (with maintenance factor=0.81) Longitudinal uniformity (U l ) 0.60
U o ≥0.40 Overall uniformity (U o ) 0.51
L m ≥0.75 cd/m 2 Average luminance (L ave ), cd/m 2 0.83
Geometric configuration Roadway • distribution width: 8 m Number of • traffic lanes: 2 Reflective road • surface type: R3 Pole spacing: • 30 m Luminaire • arrangement: one-sided Mounting • height: 6.2 m Type 1 • Tilt angle: 15° • Overhang: 0.5 m • Section length: 1,020 m
Street: “St. St. Cyril and Methodius” Town: Pavlikeni Lighting class: M4 LED street luminaire parameters used in the lighting calculations Light Efficacy Luminous (κ), flux (Ф), type lm/W lm 145.6 7,282 Abbreviation: LED: Light-emitting diode.
Electric power (P), W 50
Volume 22 Issue 6 (2025) 190 doi: 10.36922/AJWEP025310242
