The standard of city road lighting

Table 1 don't road motor vehicle traffic road lighting standard level type pavement road illumination brightness glare restriction threshold value increment TI ( %) Initial value environment than SR minimum average maximum intensity Lav ( Cd /㎡) Maintain the value total evenness U0 minimum longitudinal uniformity

table 1 motor vehicle road lighting standard

level

road type

the road surface brightness illumination

pavement

glare restriction threshold value increment

TI ( %) Maximum initial

environment than SR

minimum value

the average brightness Lav ( Cd/㎡) Maintain the value

total evenness U0 minimum

the longitudinal uniformity UL minimum

the average illuminance Eav ( Lx) Maintain the value

evenness

UE minimum

Ⅰ

expressway, distance and welcome road, the main road to government agencies and large public buildings, city center or business center path

1. 5 - 2. 0

0. 4

0. 7

20/30

0。 4

10

0. 5

Ⅱ

one

0. 75/1. 0

0。 4

0。 5

0 10/15。 35

10 0。 5

Ⅲ

branch

0. 5/0. 75

0。 4

-

0 8/10。 3

- 15

table 2 SEC area lighting standard