How to Check Blind Spots and Stay Aware During a Road Test?

Check your mirrors, signal, then turn your head and look out the side window toward the lane you want before you move. That quick head check is how to check blind spots your mirrors can’t show you, and it matters every day on roads like GA-400 and I-285. At 1 ACT Driving Schools, we teach it as a lifelong habit, not a trick for test day. The road test just happens to be where a skipped check gets noticed fastest.

What Is a Blind Spot, and Why Do Mirrors Miss It?

A blind spot is any area around your car that you can’t see in a mirror or through the windshield. Each side has one, usually just behind and beside the rear doors. A car, a motorcycle, or a cyclist can sit in that gap and never appear in your mirrors. Georgia DDS tells parents to coach teens to use the inside mirror for the rear, the side mirrors for the sides, and a head check for the area just beyond peripheral vision (DDS 40-Hour Parent/Teen Driving Guide).

DDS also suggests a drill that makes the gaps real. With the engine off, a helper walks backward from the front bumper until you can see their feet, and you mark that spot with a cone (DDS guide, Sessions 1 & 2). Repeat it at the rear and both sides. Once you’ve measured your own car’s blind areas, they stop being an abstract idea.

How Do You Check Your Blind Spot Step by Step?

Follow the same order every time:

1. Rearview mirror. Read the traffic behind you and how fast it’s closing.
2. Side mirror. Look at the mirror for the lane you want and judge the gap.
3. Signal. Give other drivers notice before you move, not while you’re moving.
4. Recheck, then head check. Steady your hands and take a quick look out the side window on that side.
5. Move smoothly. If the space is clear, glide over at a steady speed. DDS says the front and rear tires should cross three to five broken lane lines almost together.

Two details trip people up. DDS tells coaches to have drivers look out the front side window, not the rear one, because the check covers the area just past your peripheral vision. New drivers also tend to turn the wheel in the direction they turn their head. Keep your hands steady, take your glance, and bring your eyes back to the road.

Want a second set of eyes? An instructor beside you can watch your head turn and your hands at the same time, which is hard to judge on your own. Our behind-the-wheel lessons start at 2 hours and are available across our Metro Atlanta locations.

How Should You Set Your Mirrors to Shrink Blind Spots?

Set your mirrors before you move, and again whenever someone else has driven the car. DDS says the inside mirror should frame the whole rear window, and the side mirrors should be angled to reduce blind spots and headlight glare. Our instructors use a simple method for the sides. Lean your head toward the driver’s window and turn the left mirror outward until you can barely see the flank of your car. Then lean toward the center of the car and do the same on the right.

Now a car passing you should slide out of the rearview mirror and into the side mirror. Then it should show up in your peripheral vision, with no gap in between. If it vanishes for a moment, turn the mirror out a little more. Unlike the head check, you only have to do this once.

Free download: Our one-page Blind Spot Check Card puts the five steps and the mirror method on a card you can keep in the glovebox. Get the card.

When Should You Check Blind Spots Besides Lane Changes?

Any time the car moves sideways or backward into space you can’t fully see:

• Merging from an on-ramp onto a highway
• Turning, when cyclists and pedestrians can hide beside the car
• Pulling away from a curb
• Backing out of a parking space, where the Georgia Drivers’ Manual says to turn your head and look over your right shoulder instead of depending on mirrors
• Moving over to take an exit

The same manual tells drivers to stay out of other people’s blind spots (Georgia DDS Drivers’ Manual). Trucks and buses have large side “No-Zones,” and if you can’t see the driver’s face in their side mirror, they can’t see you.

Do Blind Spot Monitors Replace the Head Check?

No. A monitor is a backup, not a replacement. IIHS studied these systems and found in 2017 that they cut lane-change crashes by 14 percent, and lane-change crashes with injuries by 23 percent (IIHS). That is a real gain, but it is far from a guarantee. A sensor can be dirty or switched off, and the next car you drive, such as a rental or a borrowed vehicle, may not have one. Treat the warning light as information and keep the head check as your decision.

What Is Vision Awareness, and How Do You Build It?

A blind spot check covers one moment. Vision awareness is what you do the rest of the time: keep your eyes moving instead of locking onto the bumper ahead. DDS teaches a habit called commentary driving, where you say what you see out loud, such as “clear left, clear right, clear ahead.” It sounds silly in a driveway. On a real road, it forces your eyes to check each area.

Distance gives you time to look. DDS recommends at least a 3-second gap behind the vehicle ahead, and says to steer toward a target in the middle of your intended path. Early darkness and low winter sun make scanning harder from November on. Headlight glare behind you is one more reason to set your mirrors well. If fog or glare cuts your view, add space instead of squinting.

What Mistakes Do New Drivers Make?

These are the habits our instructors correct most:

• Staring too long. A long look over your shoulder is a long time not watching the road ahead.
• Steering with the head. The wheel drifts toward the side you’re checking.
• Mirror-only checks. Mirrors don’t cover the gap, which is the whole reason for the head check.
• Checking once, then waiting. If you hesitate, the car beside you may arrive in the meantime, so check again before you go.
• Signaling after moving. A signal is notice, not an apology.
• Checking only the left. Right-side blind spots matter just as much on turns and exits.

How Does Blind Spot Checking Show Up on a Road Test?

It shows up in every lane change, turn, and pull away from the curb, which is why the everyday habit is also the best preparation. DDS training materials list the blind spot check inside the lane-change steps, so build it into your practice from the first lesson rather than the week before the test. You don’t need an exaggerated head turn. Smooth and consistent beats dramatic.

When you’re ready to test, we offer the Georgia road test at our Alpharetta and Lawrenceville locations only. It happens at the school in our insured vehicle, with no trip to a DDS office, and a free retake if you don’t pass the first time. If you’re closer to another location, you can take your lessons there and test at one of those two. Our road test terms guide explains the vocabulary you’ll hear.

Ready for the road test? See how road test services work at Alpharetta and Lawrenceville, or find the location nearest you to start with lessons.

The Bottom Line

Knowing how to check blind spots comes down to one habit: mirrors, signal, quick head check, then move. Set your mirrors properly once, keep your hands steady, and treat any sensor as backup. The goal is for the routine to feel the same on a test route and on a Friday evening on I-85. If you’d like someone to watch your technique, our instructors are happy to help.

FAQ

How far should I turn my head?
Far enough to see the area just beside and behind your door, through the side window next to you. It is a quick glance, not a long stare. Keep your hands steady so the car doesn’t drift.

Can I rely on my car’s blind spot sensor?
No. IIHS found these systems reduce lane-change crashes by 14 percent, which helps but leaves plenty uncovered. Use the light as a warning and still make the head check.

How often should I check my blind spots?
Before any move that takes the car sideways or backward: lane changes, merges, turns, pulling from a curb, and backing out. In between, keep scanning the road rather than fixing your eyes on one spot.

What if I only use my mirrors?
Mirrors leave a gap beside each rear door, and the head check exists to cover it. DDS teaches the check as part of the lane-change steps, so it’s a habit worth building before test day.

How do I know my mirrors are set correctly?
A passing car should move from the rearview mirror to the side mirror and then into your peripheral vision without disappearing. If there’s a gap, turn the side mirror outward a little more.

Where can I take the road test near Atlanta?
With us, at Alpharetta or Lawrenceville, in our insured vehicle with no DDS visit. Our other locations offer lessons to prepare.