Notes

The Effects of a 0.02% BAC

more relaxed, have difficulty concentrating on one thing, and react more slowly. In addition, you will experience:
A loss of reason and judgment
Altered mood
Weakened vision, particularly in tracking objects and scanning
Decline in attention, especially when switching between tasks

The Effects of a 0.05% BAC

The probability of a crash rises significantly once your BAC reaches 0.05%. You may begin to feel euphoric, relaxed, and especially sociable. However, your hand-eye coordination and ability to track objects will become impaired. In addition, you'll experience:
Further impaired judgment and alertness
Compulsive, exaggerated behavior
Reduced physical coordination, including trouble steering
A significant increase in reaction time
Further weakened vision, including trouble focusing and adjusting to changes in brightness
Dulled sensory perceptions

The Effects of a 0.08% BAC

A BAC of 0.08% is the legal limit for drivers 21 and over in the state of Texas. With a BAC of 0.08%, you'll become increasingly talkative and excited, but you'll experience difficulty processing information and focusing on and performing driving tasks like steering, braking, speed control, and gear shifting. In addition, you'll experience:

Significantly increased reaction time and difficulty executing a series of actions
Reduced awareness of your surroundings and ability to control your speed
Overconfidence and a tendency to engage in high-risk behavior
Further impaired judgment, alertness, and memory
Further reduced physical coordination, including poor balance, speech, vision, and hearing

The Effects of a 0.08% BAC

A BAC of 0.08% is the legal limit for drivers 21 and over in the state of Texas. With a BAC of 0.08%, you'll become increasingly talkative and excited, but you'll experience difficulty processing information and focusing on and performing driving tasks like steering, braking, speed control, and gear shifting. In addition, you'll experience:

Significantly increased reaction time and difficulty executing a series of actions
Reduced awareness of your surroundings and ability to control your speed
Overconfidence and a tendency to engage in high-risk behavior
Further impaired judgment, alertness, and memory
Further reduced physical coordination, including poor balance, speech, vision, and hearing

The Effects of a 0.15% BAC

The higher your BAC rises, the more your judgment will become impaired and the more your behavior will become unrestrained. At a 0.15% BAC, you will experience:

Near complete loss of muscle control and balance
Nausea, vomiting, and a potentially fatal drop in body temperature
Life threatening reductions in respiration and heart rate
Inability to control your vehicle
Severe detachment from and inability to understand the current driving environments.

With a 0.20% BAC, you'll experience a loss of alertness and an onset of drowsiness and lethargy.
With a 0.30% BAC, you'll fall into a stupor and risk falling into a comatose state.
With a 0.40% BAC, you'll be at risk of death caused by suppressed respiration or an erratic heartbeat.
With a 0.50% BAC, breathing and heart functions can become so depressed that they cease and death from alcohol poisoning becomes very likely. A male who weighs 150 lbs and consumes twelve drinks in the span of two hours can increase his BAC to 0.50%.

A BAC of 0.015% to 0.049% increases a young driver's risk of dying in a single vehicle collision 2.5 times.
A BAC of 0.05% to 0.079% increases a young driver's risk of dying in a single vehicle collision 9 times.
A BAC of 0.08% to 0.099% increases a young driver's risk of dying in a single vehicle collision 40 times.
A BAC of 0.10% to 0.149% increases a young driver's risk of dying in a single vehicle collision 90 times.
A BAC of 0.15% or greater increases a young driver's risk of dying in a single vehicle collision 420 times.

https://quizlet.com/66578000/drivers-ed-ch-21-flash-cards/

With a BAC of at least 0.02% to 0.05%, your information processing skills will be reduced and you'll be less likely to notice traffic control devices, vulnerable road users, and important information on the dashboard.
With a BAC of at least 0.02% to 0.06%, you'll start to feel drowsy, increasing the chances that you'll doze off or experience a microsleep while driving, especially if it's late at night and you're already fatigued.

With a BAC of at least 0.02% to 0.08%, you'll become less capable of multitasking as you drive. The more things you have to deal with, the more likely you'll forget about something important or make a mistake when you have to perform a maneuver.
With a BAC of at least 0.05% to 0.08%, your ability to keep your vehicle in your lane (which is known as tracking) will decrease. Because you'll have less muscle control, you'll be more likely to steer erratically, cross into another lane, run off the road, or attract the attention of a police officer.


Research has shown that a BAC of 0.04% to 0.08% affects complex reaction time much more than simple reaction time. As a result, an intoxicated novice driver may respond quickly but in an unsafe way.