Beginner Driver Education · Attention
The Dangers of Combining Multiple Impairments While Driving
Driviology Road Safety Education Team
What this actually means for you
Driving asks for your attention in a way almost nothing else in daily life does — full, continuous, and for the whole trip, not just the tricky parts. Driving under any impairment is dangerous, but combining multiple impairments—such as alcohol, drugs, fatigue, and distractions—dramatically increases the risk of accidents. It cannot be faked or crammed the night before a test. It is a habit you either build in your first months of driving or spend years unlearning the opposite.
Dangers of Combining Multiple Impairments While Driving
The Dangers of Combining Multiple Impairments While Driving:
Driving under any impairment is dangerous, but combining multiple impairments—such as alcohol, drugs, fatigue, and distractions—dramatically increases the risk of accidents.
1. Alcohol and Drugs:
Mixing alcohol with drugs amplifies the impairments caused by each. This combination can lead to severe cognitive and physical impairments, unpredictable reactions, and poor decision-making, all of which significantly raise the risk of collisions.
2. Alcohol and Medications:
Combining alcohol with medications can cause dangerous side effects like extreme drowsiness, dizziness, or heightened anxiety, impairing a driver's ability to stay alert and react quickly.
3. Fatigue, Illness, and Distraction:
Driving while tired, ill, or distracted is risky on its own, but combining these factors with impairments like alcohol or drugs can result in poor lane control, missed traffic signals, and delayed reactions, leading to severe accidents.
4. Preventing the Risks:
Plan: Use a designated driver or public transport if impaired.
Avoid distractions: Keep your focus on the road.
Get enough rest: Avoid driving when tired.
Stay sober: Avoid alcohol and drugs before driving.
Manage health: Follow medication guidelines.
Avoiding the combination of impairments can help keep yourself and others safe on the road.
Using this on Ontario roads — and on your road test
Ontario law treats this seriously: distracted driving penalties are steep, and novice drivers face licence suspensions on top of fines. But the legal risk is honestly the smaller one — a car at 60 km/h covers the length of a basketball court in about two seconds, and a lot can step into that space. In the GTA the demands never stop: transit stops, cyclists, pedestrians looking at their own phones, delivery riders filtering through traffic. Set the car up before you move — seat, mirrors, phone away and silent, route planned — so that once you are rolling, your attention has only one job.
Questions drivers ask us
Can you explain dangers of combining multiple impairments while driving in simple terms?
This combination can lead to severe cognitive and physical impairments, unpredictable reactions, and poor decision-making, all of which significantly raise the risk of collisions.
What is the easiest way to protect my attention while driving?
Set the car up before you move: phone away and on silent, mirrors and seat adjusted, route entered, music chosen. Once you are rolling, every one of those small jobs competes with the road — and the road is the only one that can hurt you.
Can I fail a road test for looking at my phone?
Reaching for a phone while driving is a serious error and, on Ontario roads, a serious offence — for novice drivers it can mean a licence suspension, not just a fine. On a test, your phone should be away and silent from the moment you get in the car.