Collision avoidance systems (CAS) are designed to prevent rear-end collisions using sensors and automatic braking. CAS has both passive safety features like seatbelt pretensioners, and active safety like automatic braking. Road accidents are a major cause of deaths, showing the need for CAS. The CAS configuration uses millimeter-wave radar sensors and an electronic control unit connected to pretensioners and brakes. It provides visual, audio, and automatic braking warnings as another vehicle approaches. Many automakers now include CAS, and it could expand to aircraft and rail in the future to help prevent accidents.

1. COLLISION AVOIDANCE SYSTEM

2. Outlines
1 What is CAS? 2 Need of CAS 3
System
Configuration
6 Conclusion 5 Warning Devices 4 How It Works

3. Collision Avoidance System
• CAS is a system designed to prevent rear‐end collisions.
• There are two kinds of safety systems:
1. Passive safety.
2. Active safety.

4. Need
of
CAS Road traffic deaths
by type of road user
Traffic-related fatalities in
the United States 2019
Death rate from
road accidents

5. Conditions of Collision
Forward Collision Rear-end Collision

6. System Configuration
Millimeter-
wave Radar
Sensors
Electronic Control
Unit (ECU):
1. E-Pretensioner ECU.
2. E-Pretensioner.
3. Meter unit.
CAS System
Configuration

7. System Operation

8. Control System of CAS
1. An audible warning.
2. Light braking & seat-belt retraction.
3. Strong braking &seat-belt retraction.

9. Ranges of Sensors

10. Flow of Operation

11. Warning Devices
• Visual head-up displays:
warnings are displayed on the windshield
in the driver's field of view.
• Audio/Voice signals:
auditory signals appear
to be less intrusive on
driving tasks.

12. Automobile Manufacturers
Volkswagen(Front
Assist on 2011)
Skoda (Skoda
Citigo in June 2012)
Audi (2011 Audi A8)
Mercedes-Benz
(in the fall of 2005)
Toyota PCS
(February 2003)
Ford (2009on
Lincoln MKS and MKT)
Honda
(2003 incorporated an
E-Pretensioner)

13. Conclusion
2
1 Automatic braking systems can stop the car to avoid an accident.
In the future, it will be implemented in aircrafts & railways.

14. Name Date Book Name Other
James K. Kuchar and Ann C. Drumm 2007
The Traffic Alert and Collision Av
oidance System
VOLUME 16, NUMBER 2, 2007
LINCOLN LABORATORY JOUR
NAL
Honda Motors 2003 Science & Education Trends in Japan
Autoweb.com.au 2003
Honda develops a new collision
avoidance safety system
Francois Granet, Rosella Picado and
Lauren Smith
2003 Longitudinal Avoidance
References

15. Thanks!