safety features in vehicle
TRANSCRIPT
Safety features in
vehicles
Learning Outcomes
At the end of this lesson, you should be able to:
• Identified eight safety features in vehicles.• Explain each function of the safety
features in vehicles.• Describe the importance of safety features
in vehicles.
What do you understand by safety features?
• Safety : freedom from danger• Feature: a typical part of something
or a quality that something has.Safety features:• Security features• Feature of part that is added to
insure a user's safety
Eight of safety features in car
• Safety seat belts• Airbag• Crumple zone• Anti lock braking system• Side impact bars (strong struts)• Shatter- proof windscreen• Headrest• Padded dashboard
Safety features in
car
Headrest
Antilock braking system
Front crumple zone
Padded dashboard
Shatter-proof windscreen
Airbag
Rear crumple zone
Seatbelt Side impact bars
Why we need this safety features in our daily life?
Based on physic concepts : inertia conceptAs we know, when car crash with solid thing,
the car stop suddenly, the driver will continue to move forward with the same speed before the car crashed. To reduce the impact, you need something to absorb that impact.
Why we need this safety features in our daily life?
Based on physic concepts: impulse force• The time of impact when vehicle are
involved in a collision is normally short. This will normally lead severe damage as the impulsive force that acts on the vehicles and its passenger can be extremely large. To reduce impulsive force, we need the crumple zone to length the time of collision.
video
Question?????Based on this video:• What is your first observation on this
video?• How many of the safety features that
you have seen in this video?• Why the driver still got bad injured even
he was protected by airbag?• What conclusion can you made from
this video?
The important of safety feature and their function?
seatbelt
How it is work?• To stop or keep the
driver and passengers tightly pressed to their seats.
seatbelt
The importance of seatbelt• Prevent the passenger
from being thrown out of the car. Slows down the forward movement of the passenger when the car stops abruptly.
airbagHow it is work?• Airbag have a sensor to detect the sudden deceleration
and impact on the car. When an impact occurs, it causes heating of a chemical called sodium azide. This release nitrogen gas quickly to inflate the airbag within a fraction of a second.
airbag
The importance of airbag
• Acts as cushion for the head and body in an accident and thus prevent injuries to the driver and passenger.
Eight of safety features in car
• Safety seat belts• Airbag• Crumple zone• Anti lock braking system• Side impact bars (strong struts)• Shatter- proof windscreen• Headrest• Padded dashboard
Group discussion
What you should discuss in your home group…..
The important of safety feature given and their function?
Situation
1. Which car gave serious injured to the passenger when the car crashed with solid thing?
a) Car A: stop gradually by sliding through gravel and sand.
b) Car B: crash into solid barrier and suddenly stop.
Shatter-proof windscreen
Padded dashboardairbag
Headrest
Rear crumple zone
Antilock braking system
Seatbelt
Side impact bars
Front crumple zone
A B
I
F
D
C
HG
E
Learning Outcomes
At the end of this lesson, you should be able to:
• Identified eight safety features in vehicles.• Explain each function of the safety
features in vehicles.• Describe the importance of safety features
in vehicles.
Home work and Reading assignment • Homework: Do some research and report about safety
features in motorcycle and boat. Then submit this homework next week before 12.11pm.
• For the next lesson Read the text book, page 25:understanding
gravity
Think before you drive
Think before you drive
Situation
2. All car seats are equipped with head restraints with adjustable height. What do you think is the function of the head restraint and why do they come with adjustable height?