Oizom installed air monitoring devices called Polludrone throughout the Abdul Aziz Tunnel in Jeddah, Saudi Arabia to monitor pollution levels during Ramadan when millions of pilgrims pass through. The data collected by Polludrone helped authorities identify peak pollution hours and implement solutions like adjusting traffic and ventilation to reduce emissions in real-time and protect travelers' health. The real-time monitoring system provided a way to control pollution levels within the tunnel.

1. STCS ABDUL AZIZ TUNNEL MONITORING

2. Project Overview
With the massive influx of Pilgrims to Mecca every
year, the Abdul Aziz Tunnel in Jeddah faces
excessive pollution during the holy month of
Ramadan. The authorities thus had to equip the
tunnel with air monitoring devices to monitor the
pollution level. Oizom stationed Polludrone
throughout the tunnel to observe the vehicular
emission. The analyzed data helped the
authorities to identify the peak pollution hours
and deploy data-driven solutions for bringing
down the emission levels in real-time.
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King Abdul Aziz Tunnel
Pilgrims crossing the Tunnel

3. Details of Project
Client:
Location: King Abdul Aziz Tunnel (Saudi Arabia)
Application: Road Tunnel Monitoring
Project Brief: Monitoring pollution level in tunnel to ensure safe commute to pilgrims
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4. Problem Statement
The Abdul Aziz tunnel connects Jeddah city to the holy city of
Mecca. Located 70 km from Jeddah, Mecca witnesses millions
of Muslims every year during September month to perform Hajj
(their pilgrimage). The tunnel gets densely crowded with
vehicles due to this inrush, causing a rampant increase in
vehicular pollution, particularly in NOx and CO levels.
The concentrated pollution within the closed tunnel
substantially affects the travellers' respiratory health. Ventilating
fans installed within the tunnels dilute the concentrations of the
pollutants. Regulating the operation of these fans is critical,
which depends on the breach of the concentration threshold.
Having a real-time monitoring system can help in evaluating
time to switch on the exhaust fans to dissipate the pollutants
out.
Thus, the authorities needed to monitor the pollution level to
mitigate its adverse effect on the travellers' health.
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Aerial View of King Abdul Aziz Tunnel

5. Solution offered by Oizom
Oizom helped STC to install Polludrone throughout the tunnel to monitor the pollutants emitted from the
vehicles crossing the tunnel. Polludrone captures all vehicular emissions like
● particulate matters (like PM2.5, PM10),
● gaseous contaminants (like CO, CO2, SOx, NOx, TVOCs etc.) along with
● meteorological parameters (such as noise pollution, temperature, humidity, ambient pressure, etc.).
The data is transferred through the cloud platform to be analyzed at Oizom Terminal. All the acquired data
is analyzed separately to give their trend analysis over time. Data analysis can help in identifying the major
pollutant being emitted and take corrective steps towards its reduction. Controlling mechanism can be
devised through real-time monitoring to regulate the traffic inside the tunnel for keeping the pollution
within confined limits.
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6. Solution offered by Oizom
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Oizom Polludrone device installed within the tunnel Oizom Terminal for pollution data analysis

7. Impact of Project Implementation
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Polludrone helped the authorities to analyze the vehicular pollution trend and regulate the traffic
accordingly. The real-time data helped to detect the peak pollution hours to control traffic in the
tunnel during those hours. During the peak hours when the pollution crosses the threshold, the
tunnel can be closed for a while and pollutants can be ventilated. This ventilation control can be
regulated by adjusting the tunnel fans to exhaust the pollutants out for reducing the exposure.

8. Without us !
With us :)
Oizom Instruments Pvt. Ltd.
306 Indraprasth Corporate, Anand Nagar Road
Prahladnagar, Ahmedabad - India
+91-8866660025 | contact@oizom.com
Oizom - Savoie Technolac
House Boat 9, 12 Allee Du Lac De Garde,
Le Bourget du lac, France
+33 (0) 783426695 | hello@oizom.com
With us :)