Do or Die
National Geographic's (NatGeo series) | Icy Highway Crisis

life happens fast
and in an instant disaster
could strike
when the choices you make
the difference
between life and death
what would you do
put yourself to the test
and see if you have what it takes to
stay alive
Would You
Do or Die
it's the number one killer on winter
roads in the U.S claiming more than
twice as many lives most years then
severe thunderstorms tornadoes
and hurricanes combined
it's ice
and when it forms on the cold asphalt
it Blends in perfectly
making the road smooth
slick and dangerous
so imagine how terrifying it must be for
this trucker when he hits his brakes and
just keeps going
now jump inside the cab and take the
wheel
would you know how to survive this icy
skid
what would you do
a keep your eyes out for hazards and
accelerate to re-establish your grip
B apply slow constant pressure to the
brakes
[Music]
the gas
your back wheels lead the way
here's what you you should consider
you're at the helm of an 18-wheeler
skidding across the Interstate with
virtually no control
how did this happen
in the seconds before your wheels hit
the ice
they maintain traction with a force
known as static friction
it's the grip that forms where the tire
meets the road at the point of contact
the grooves in your Treads interlock
with the irregular surface of the
asphalt
like gears in a transmission but the
moment the wheels hit the ice the rugged
surface of the road becomes smooth and
most of that static friction
disappears you may as well be driving on
an oil slick
you need to do something to stop the
skids but what in this case under the
hood you have an engine with more than
400 horsepower strong enough to haul 40
tons of weight across the Interstate at
65 miles per hour
and then there's the truck's anti-lock
braking system
found in most modern cars anti-lock
brakes use sensors at the wheel's axles
to detect a sudden change in speed and
prevent your wheels from locking up
just letting it slide is not an option
it's time to make your choice a
[Music]
B
or c
[Music]
so what would you do if you're concerned
about your forward momentum you might be
tempted to put your foot down applying
slow constant pressure to your brakes
but even in the best conditions it can
take a fully loaded semi going 55 miles
per hour over a hundred yards
ice into the equation and it can be nine
times longer the length of 11 New York
City Blocks
and that's if your brakes have any
stopping power at all
chances are hitting the brakes on Ice
you'll lock up your wheels completely
suddenly your 18 tires might as well be
hockey pucks
and if you think you can rely on your
anti-lock brakes
think again no matter the size of the
vehicle on Ice even this safety feature
can fail to stop your wheels from
locking up
hit the brakes and you're speeding
toward trouble
[Music]
so if your wheels need to be spinning in
order to get traction you could jump
start that process by tapping on the gas
while keeping your eyes out for hazards
but hitting your gas could make your
tires spin in place and when they do
regrip the road You'll Rock it straight
toward whatever's in front of you
and an 80 000 pound truck crashing at 55
miles per hour
generates the same catastrophic Force as
a four-door sedan traveling five times
that speed
[Music]
as for keeping your eyes on the hazards
ahead idea
it may sound strange but experts advise
never focus on what you don't want to
hit
it's a phenomenon known as Target
fixation where drivers inadvertently
steer toward what they're staring at
that's one reason why police officers
usually approach cars pulled over on
busy highways from the passenger side
hit the gas while staring at hazards and
you're racing straight for impending
doom foreign
[Music]
so what should you do
whether you're in an 80 000 pound semi
or an 1800 pound smart car
if you hit ice take your foot off the
gas and let your back tires Lead the Way
by letting up on the gas you'll
automatically reduce your speed and that
alone could be enough to regain control
if not continue to gently steer the
wheel in the direction your back tires
are skidding
you may have to do it several times as
your rear end swings back and forth But
ultimately you'll be able to maintain
control
until the patch of ice ends
the driver of this truck handled his
skid like a pro gently easing the wheel
back and forth with his foot off the
accelerator until he regained control
if you want to survive the number one
killer on winter roads
follow his lead and steer clear of
disaster


Comments (2)
yes we have..thank for comment.God bless. Jaci.
we have only 1 life so spent all of your day wisely mostly to the Lord.