TNAG-1613-FCO40-2221-Executive-Council-of-Hong-Kong-memoranda-and-minutes-of-meet-1987 — Page 264

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2.3.3

Effect of Influencing Factors (IFs)

For the purpose of this Technical Memorandum any industrial area,

major road or the area within the boundary of Hong Kong

International Airport shall be considered to be an IF. Industrial

areas and the Airport should be regarded as IFs irrespective of the

time of day.

The term "industrial area" means an area which consists of a

significant number of factories or

or industrial undertakings located

primarily in purpose-built industrial buildings. The term "major road" means a road which has a heavy and generally continuous flow

of vehicular traffic and, in normal circumstances, means a road with

an annual average daily traffic flow in excess of 30 000. Where a major road has an unusually low traffic flow rate (less than 300 vehicles per hour) at the time of day under consideration it shall

not be considered as an IF at that time.

In situations where more than one IF affects the NSR to an equal degree only one IF shall be considered.

2.3.4

Area Sensitivity Rating (ASR)

The Authority shall determine the appropriate ASR for the NSR under

consideration from Table 1.

Any NSR shall, irrespective of Table 1, be assigned an ASR of "C" if

it is within 100 m of a zone designated as "Industrial" or

"Industrial Estate" on a statutory Outline Zoning Plan, or an ASR of

"B" if it is between 100 m and 250 m from such a zone,

cases where Table 1 indicates an ASR of "C".

except in