Page 35 - Draft 2023 2024 CDL Manual w Modernization Info

- SECTION 2: DRIVING SAFETY

a crash depend upon how well you take action. Keep One Set of Wheels on the Pavement, Pump the Brakes. Sometimes pumping the
Actions you can take are discussed below. if Possible. This helps to maintain control. brake pedal will generate enough hydraulic
Sta on the Shoulder. If the shoulder is clear, pressure to stop the vehicle.
2.17.1 - Steering to Avoid a Crash y
stay on it until your vehicle has come to a stop. Use the Parking Brake. The parking or emer­
Stopping is not always the safest thing to do Signal and check your mirrors before pulling gency brake is separate from the hydraulic brake
in an emergency. When you don't have enough back onto the road. system. Therefore, it can be used to slow the ve­
room to stop, you may have to steer away from Returning to the Road. If you are forced to hicle. However, be sure to press the release button
what's ahead. Remember, you can almost al­ or pull the release lever at the same time you use
return to the road before you can stop, use the
ways turn to miss an obstacle more quickly than following procedure: the emergency brake so you can adjust the brake
you can stop. (However, top-heavy vehicles and pressure and keep the wheels from locking up.
tractors with multiple trailers may flip over.) • Hold the wheel tightly and turn sharply Find an Escape Route. While slowing the
Keep Both Hands on the Steering Wheel. enough to get right back on the road safely. vehicle, look for an escape route-an open field,
Don't try to edge gradually back on the road.
In order to turn quickly, you must have a firm side street, or escape ramp. Turning uphill is a
grip on the steering wheel with both hands. If you do, your tires might grab unexpectedly good way to slow and stop the vehicle. Make
and you could lose control.
The best way to have both hands on the wheel, sure the vehicle does not start rolling backward
if there is an emergency, is to keep them there • When both front tires are on the paved sur­ after you stop. Put it in low gear, apply the park­
all the time. face, countersteer immediately. The two turns ing brake, and, if necessary, roll back into some
How to Turn Quickl and Safel . A quick should be made as a single "steer-counter­ obstacle that will stop the vehicle.
steer" move.
y
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turn can be made safely, if it's done the right Brake Failure on Downgrades. Going slow
way. Here are some points that safe drivers use: 2.17.2- How to Stop Quickly enough and braking properly will almost al­
• Do not apply the brake while you are turn­ and Safely ways prevent brake failure on long downgrades.
Once the brakes have failed, however, you are
ing. It's very easy to lock your wheels while If somebody suddenly pulls out in front of going to have to look outside your vehicle for
turning. If that happens, you may skid out you, your natural response is to hit the brakes. something to stop it.
of control. This is a good response if there's enough dis­ Your best hope is an escape ramp. If there is
• Do not turn any more than needed to clear tance to stop, and you use the brakes correctly. one, there'll be signs telling you about it. Use it.
whatever is in your way. The more sharply You should brake in a way that will keep your Ramps are usually located a few miles from the
you turn, the greater the chances of a skid vehicle in a straight line and allow you to turn if top of the downgrade. Every year, hundreds of
or rollover. it becomes necessary. You can use the "controlled drivers avoid injury to themselves or damage
braking" method or the "stab braking" method. to their vehicles by using escape ramps. Some
• Be prepared to "countersteer," that is, to turn escape ramps use soft gravel that resists the mo­
the wheel back in the other direction, once Controlled Braking. With this method, you
you've passed whatever was in your path. apply the brakes as hard as you can without tion of the vehicle and brings it to a stop. Others
Unless you are prepared to countersteer, you locking the wheels. Keep steering wheel move­ turn uphill, using the hill to stop the vehicle and
won't be able to do it quickly enough. You ments very small while doing this. If you need soft gravel to hold it in place.
Any driver who loses brakes going downhill
should think of emergency steering and coun­ to make a larger steering adjustment or if the should use an escape ramp if it's available. If you
tersteering as two parts of one driving action. wheels lock, release the brakes. Re-apply the don't use it, your chances of having a serious
Where to Steer. If an oncoming driver has brakes as soon as you can. crash may be much greater.
drifted into your lane, a move to your right is Stab Braking If no escape ramp is available, take the least
best. If that driver realizes what has happened, • Apply your brakes all the way. hazardous escape route you can--such as an
the natural response will be to return to his or open field or a side road that flattens out or turns
her own lane. • Release brakes when wheels lock up. uphill. Make the move as soon as you know
If something is blocking your path, the best • As soon as the wheels start rolling, apply your brakes don't work. The longer you wait,
direction to steer will depend on the situation. the brakes fully again. (It can take up to one the faster the vehicle will go, and the harder it
• If you have been using your mirrors, you'll second for the wheels to start rolling after will be to stop.
know which lane is empty and can be safely you release the brakes. If you re-apply the 2.17.4 - Tire Failure
used. brakes before the wheels start rolling, the
• If the shoulder is clear, going right may be vehicle won't straighten out.) Recognize Tire Failure. Quickly knowing
best. No one is likely to be driving on the Don't Jam on the Brakes. Emergency brak­ you have a tire failure will let you have more
shoulder but someone may be passing you ing does not mean pushing down on the brake time to react. Having just a few extra seconds
on the left. You will know if you have been pedal as hard as you can. That will only keep the to remember what it is you're supposed to do
can help you. The major signs of tire failure are:
using your mirrors. wheels locked up and cause a skid. If the wheels
• If you are blocked on both sides, a move to are skidding, you cannot control the vehicle. • Sound. The loud "bang" of a blowout is an
the right may be best. At least you won't force easily recognized sign. Because it can take
anyone into an opposing traffic lane and a 2.17.3- Brake Failure a few seconds for your vehicle to react, you
might think it was some other vehicle. But
possible head-on collision. Brakes kept in good condition rarely fail. Most any time you hear a tire blow, you'd be safest
Leaving the Road. In some emergencies, you hydraulic brake failures occur for one of two to assume it is yours.
reasons: (Air brakes are discussed in Section 5.)
may have to drive off the road. It may be less • Vibration. If the vehicle thumps or vibrates
risky than facing a collision with another vehicle. • Loss of hydraulic pressure. heavily, it may be a sign that one of the tires
Most shoulders are strong enough to support • Brake fade on long hills. has gone flat. With a rear tire, that may be the
the weight of a large vehicle and, therefore, of­ only sign you get.
fer an available escape route. Here are some Loss of Hydraulic Pressure. When the system
guidelines, if you do leave the road. won't build up pressure, the brake pedal will • Feel. If the steering feels "heavy," it is prob­
Avoid Braking. If possible, avoid using the feel spongy or go to the floor. Here are some ably a sign that one of the front tires has failed.
brakes until your speed has dropped to about 20 things you can do. Sometimes, failure of a rear tire will cause the
vehicle to slide back and forth or "fishtail."
mph. Then brake very gently to avoid skidding Downshift. Putting the vehicle into a lower
on a loose surface. gear will help to slow the vehicle. However, dual rear tires usually prevent this.

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