OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
• It can predict the future status of noise pollution on the basis of noise producing source evaluation and
monitoring.
Furthermore a questionnaire, as shown in Table 2, was distributed amongst the elected policemen of sample size of
50 containing questions about their personal characteristic and the various factors that affect their task performance
during the traffic conditions. The questionnaire was designed based on literature survey and discussion with traffic
constable about their physical, mental and their behavior during performing the task [1].
Table 2.The evaluation questionnaire of traffic policemen
Noise level:- [ ] dB (A) Location: ………….………..
Temperature & Relative humidity:- ( ) 0 C, ( ) % No of Vehicle/hr:-…………
Age:- ( ) Years Avg. speed/hr:-……………...
Sex:- ( ) M/F
S.N.
1
2
Questions
Which one of hazards is the most
important in your duty
Which one of noise pollution source is the
most important for you
3 When you are most tensed
4 When are you most relaxed
5 When you feel most fatigue
Answers/Options
A B C D
Air pollution Noise pollution
Long term
standing
Accidents
Traffic Crowd Car horns Others
Morning (6-11
am)
Morning (6-11
am)
Morning (6-11
am)
Afternoon (12-4
pm)
Afternoon (12-4
pm)
Afternoon (12-4
pm)
Evening (5-9
pm)
Evening (5-9
pm)
Evening (5-9
pm)
Both a &
c
Both a &
c
Both a &
c
3. Results and Discussion
The results of the study and interpretation are given in this section. Table 5.1 summarizes the traffic noise parameters
used in the study. Fig.5.1 represents typical road noise maps based on traffic data across five different types of
locations. Based on the computed data as shown in Table 2 and the developed noise maps, it is observed that all the
five location have the highest average Leq values which are significantly above the specified guidelines of Central
Pollution Control Board, New Delhi (CPCB) and WHO specification. Their guidelines are summarized below in
table: 3 [5][6].
Table 3.National and International Noise Standards
S.N. Organization Standard Noise Level (dB(A))
1 CPCB 65
2 WHO 55
3 EUROPEAN UNION (EU) 55
Based on the Leq values and the other noise computed parameters, it can be mentioned that noise values are
significantly higher, both during day and night time, than the prescribed safe limits. Near intersections, especially the
Old Bus Stand on Ambedkar Road and Hapur Chungi near Income Tax Collectorate office have very elevated traffic
volumes and accounts for extremely high noise levels in and around the site. This area can be categorized as a high
noise risk zone and is significant in the sense that residential and health establishments are within 100 m radius. The
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