In regard to installations of street lighting, what is the average illumination level of Class A1 installations used in important shopping centres and at road junctions?

Correct option is C

In regard to installations of street lighting, the average illumination level of Class A1 installations used in important shopping centres and at road junctions is 30 lumens/ m².

$$\begin{array}{|l|c|}\hline\textbf{Place and work} & \textbf{Illumination level (in lux)} \\\hline\text{In hospital (General)} & 150 \\\hline\text{Very precise mechanical or other work} & 1000 - 2000 \\\hline\text{Operation theater} & 500 - 1000 \\\hline\text{Drawing hall} & 500 - 1000 \\\hline\text{Kitchen} & 200 - 300 \\\hline\text{In meeting hall, library} & 250 - 500 \\\hline\text{Exhibition hall} & 1000 \\\hline\text{Class room} & 230 - 300 \\\hline\text{Dining and refreshment room} & 100 - 150 \\\hline\end{array}$$​