Intelligent Traffic Signal For Prioritized Vehicles Using WSN

Presented by T.V.N.VASISTA

Contents:Generic intersection designProposed adaptive system (ITS)ITS system designWorking of ITSFlow chart for deadlock eliminationAdvantages of ITSFuture scope of using Image processingConclusion

Generic intersection design

Static intersection case:

Present system is completely a static casevehicles must wait at the intersection for a

predefined time until microcontroller switches green light for that lane.

Exists no process of preemption. No green light service for priority based vehicles.

ITS system: Adaptive system provides immediate pass through for prioritized vehicles like: Ambulance Fire engine Police services VIP vehicles

ITS system Design:

dDeployment of wireless acoustic sensors on either side of the lane.

Sensor placing distance can be from 10-11 meters.

Wireless acoustic sound sensors: Road rule standard: Emergency vehicles – Honk intensity:128dB Transportation vehicles-Honk intensity:86dB

Acoustic sensing is possible by setting threshold detection value.

Thus differentiation is made between Transport & Emergency vehicles

Arranged up to 300 to 400 meters from the intersection.

Sensor Detection & communication with neighbors:

Each road side sensor will communicate with controller.

Ever intersection will communicate with next intersection

Entire communication is carried out wirelessly using ISM band.

Dead lock scenario:

solution :

System working:

Deadlock scenario-2

challenging and wishing to be a future scope of using solution through image processing:

Conclusion:

Proposed system is fully automated and can be implemented for present existing system.

For a developing country like India with heavy traffic this type of effective adaptive system is a urgent need.

Using Acoustic WSN’s for implementation is very easy and also inexpensive and high efficient operation during emergency mode.

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Thank you

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