SEATBELTS & SPEED Powerpoint Templates Anticipatory Set: Who here always wears their seatbelt? When you’re the driver, do you make all passengers buckle up? Who always drives the speed limit? Who pushes it? What do you know about seatbelts, speed, and collision investigations?   Ask the students if they have experience with the consequences of not wearing a seatbelt or speeding. Discuss if anyone has ever seen a vehicle crash scene. What do you think happened? Statement of Purpose: Today we’re going to look deeper at the effectiveness of seatbelts and some of the implications of speeding. Powerpoint Templates

News Bulletin Seatbelts Save Lives! With tongue firmly planted in cheek – this slide is not news to anyone. Seatbelts Save Lives!

Seatbelts save how many lives in Canada each year? Question 1 Seatbelts save how many lives in Canada each year? Ask the following three questions to establish the effectiveness of seatbelts in reducing death and injury. (Each line appears on a click) Question 1:   Seatbelts save how many lives in Canada each year? 1000 1000!

Question 2 Seatbelts increase your chances of surviving a collision by ___%? Question 2:   Seatbelts increase your chances of surviving a collision by ___%. Almost 50% Almost 50%

Question 3 What percentage of drivers and passengers killed in collisions were not wearing a seatbelt at the time of the crash? Question 3   What percentage of drivers and passengers killed in collisions were not wearing a seatbelt at the time of the crash? Almost 40% Almost 40%

What happens to you during a crash? Think about: When the car stops suddenly. If you didn’t have a seatbelt on. The speed of vehicle before the crash. Momentum – amount of motion (momentum (p) = mass x velocity)   Car stops suddenly but you are still moving. Consider the forces on your body from the momentum. If you don’t have a seatbelt on you will knock around the car/truck or be ejected. The faster the car is going the greater the forces - greater distances travelled inside or outside the car.

So Are You In or Are You Out? You are travelling at 56 km/hr. You hit something and are not wearing your seatbelt F = ___________lbs x 20.608 (force) your body weight (deceleration of vehicle, roadway friction and gravity) So at 56 km/hr on impact, the force (F) exerted on your body is ___________ lbs It is your seatbelt that holds you in Example of the forces that are exerted on your body – even in a slow speed crash. Participants likely have a cell phone that has a calculator for figuring out this equation.   Examples: 120 lb driver/passenger = 2472.96 lbs of force. 150 lb driver/passenger = 3091.20 lbs of force. 200 lb driver/passenger = 4120.60 lbs of force.

Engineered Life Space Vehicles are designed with an engineered life space which can withstand the force of most impacts Vehicles are designed with an engineered life space, which can withstand the force of most impacts.

Point out the area of the passenger compartment or engineered life space.   Vehicles are designed with crumple zones to absorb the energy of impact in a crash and therefore reduce the impact on the people in the vehicle.

Engineered Life Space Seatbelts keep drivers and passengers in this space where they are safest Over the next few slides emphasize the importance of the seatbelt in keeping the people in the vehicle from flying around or being ejected.

Life Space Point out the engineered lifespace remaining in these crashes. Life Space

Life Space Even large commercial vehicles are designed to maintain the engineered life space. Here, this semi rear-ended a gravel truck. Note how the engine was driven back and down under the cab.

Life Space This car was severely damaged on the drivers side causing the vehicle to enter the ditch and roll. The roof is reinforced to take reasonable crushing forces in the event of rollover, again protecting the engineered life space.

The Engineered Life Space is where you want to stay in a crash. How? – by wearing a seatbelt properly. Life Space

How does speed affect your driving? Ask for examples of how speed can affect your driving ability or car’s performance.

How does speed affect your driving? The faster you drive: the longer it takes to stop the harder you hit the more damage to you and the vehicle Driving a few km/hr over the posted speed limit: Reduces your ability to steer safely around curves or objects on the road Decreases your field of vision and your peripheral vision Extends the distance required to stop your vehicle in emergency situations Reduces your ability to obey traffic control devices such as red lights and stops signs Increases the chances that you will lose control of your vehicle Reduces the effectiveness of seatbelts and other safety devices such as airbags and side impact beams Increases probability of death or injury if there is a crash Reduces the effectiveness of roadside hardware such as barriers, crash cushions and bridge rails

Speed When damage exceeds the vehicle design, the engineered life space is minimal = a fatal collision There is a point where the engineered life space will not survive the speed/force created by the crash. When the engineered life space fails the crash can be fatal.

Investigate stopping distances at different speeds. Questions:   Questions: Did you realize how much difference a few kms/hr make in stopping distances? Why are playground zones posted at 30 km/hr? What happens when it is raining/snowing? A Canadian football field is 100m long. ICBC – Speed – fast facts LP73 (052009)

REACTION TIME AND STOPPING DISTANCE CHART REACTION TIME AND STOPPING DISTANCE CHART * Please note that this chart is based on pavement driving and “normal” conditions.. DECIDE To STOP 10 m 20 m 30 m 40 m 50 m 60 m 70 m 80 m 90 m 80 km/h REACTION: 22 m STOPPING DISTANCE: 34 m 85 km/h REACTION: 24 m STOPPING DISTANCE: 38 m 90 km/h REACTION: 25 m STOPPING DISTANCE: 43 m 100 km/h REACTION: 28 m STOPPING DISTANCE: 47 m SPEED OF IMPACT 44 km/h Optional slide to show potential crash as different speeds.   A crash at 100 km/hr is survivable. A crash at 120 km/hr is probably fatal! 110 km/h REACTION: 31 m STOPPING DISTANCE: 63 m SPEED OF IMPACT 77 km/h 120 km/h REACTION: 33 m STOPPING DISTANCE: 76 m SPEED OF IMPACT 96 km/h - FATAL * vehicle shown in proportion to actual stopping distances CoastRange driver training program and workbook