The new truck tugged the wheel and Grandpa checked the tie rods

Eleven miles into owning his new pickup, on a county road with no shoulder and a mailbox every quarter mile, Grandpa eased right to give a tractor some room. The steering wheel eased him back left. Gently. Like a waiter steering you toward a better table.

He pulled onto the gravel, set the parking brake, hit the flashers and slid under the front end on a feed sack to look at the tie rod ends. He didn't lift anything. He just looked, the way he's looked at every front end since the Ford administration of his own driveway.

Grandma stayed in the cab with the owner's manual. By the time he crawled out with dust on both elbows, she'd found the page.

"It's called lane keeping," she said. "It thought you were drifting."

"I was giving a tractor room."

"It doesn't know about the tractor."

That's the whole review, honestly. We'll do the rest anyway.

For the record, the new truck exists because his old half-ton finally lost its argument with time. It went a very long way on plain, stubborn maintenance, but Grandma pointed out she could check the tire pressure through the passenger floor. She was right. She usually is.

What it says it does

The backup camera is a small wide-angle camera, usually set in the tailgate near the handle. Shift into reverse and the dash screen shows what's behind you. Federal rules have required rear-visibility cameras on new cars and light trucks since May 2018, so if you're buying new, you're getting one. Most draw guidelines on the screen. Many bend those lines as you turn the wheel, and many pickups add a zoomed hitch view aimed at the ball. Check which ones a given truck has.

Lane assist is a family name for a few different jobs:

• Lane departure warning chimes, beeps or buzzes the wheel when you cross a painted line without signaling.
• Lane keeping assist gives the steering a nudge back toward your lane.
• Lane centering keeps the truck in the middle continuously, usually paired with adaptive cruise control.

All of it runs off a camera behind the windshield, up by the mirror, reading the paint. Signal first and it stays quiet. And all of it is driver assistance. You're still the driver, and your hands stay on the wheel.

What Grandpa thinks it does

He thinks the backup camera is a television with one channel, and it's all reruns of where you've been.

For fifty years he backed up the right way: turn around, arm over the bench seat, and Grandma at the rear corner doing hand signals nobody else alive can read. Two fingers wiggling meant "a little more." Flat palm meant "stop." Flat palm waving meant "I said stop." He's mildly offended a camera now does her job without the choreography. When the guidelines popped up he said, "The truck drew me a coloring book."

Lane assist, he's decided, is a small, polite man who lives in the steering column. This man has read every driving manual ever printed and has never once driven. Grandpa calls him "the passenger." He now signals every lane change, not for the other drivers, he says, but so the passenger won't start anything.

The wheel vibration? The truck clearing its throat.

Where he has a point

The camera sits where the mud lives. Low on the tailgate, it gets everything the road throws: rain beads, road salt film, one gravel driveway's worth of dust. Then your crisp picture looks like a watercolor of a fog bank. Wipe it with a soft cloth, and keep one in your winter kit. Don't go at it with the ice scraper.

The lens bends the world. Wide-angle views distort distance, so a post can look farther away than it is. The guidelines are an estimate, not a tape measure.

Now the part with no joke in it. A pickup has a big blind zone behind it, and a small child or a dog can be completely hidden from the driver's seat. They can also walk into the picture between the moment you glance at the screen and the moment you roll. Walk around the truck before you back out of the driveway. Use the screen and the mirrors and your own head, and back up slowly. The camera is an extra set of eyes, not a replacement for yours.

Lane assist reads paint, and paint isn't always honest. Faded lines, snow, construction zones where the old lines still show next to the new ones, a tar seam shining like a stripe in low sun, back roads with no edge line at all. The system can tug toward the wrong line or quietly give up. On many trucks it also switches itself back on every time you start the engine, so turning it off on Tuesday doesn't mean it's off on Wednesday.

The expensive parts moved to the fragile places. That windshield camera usually has to be recalibrated after a windshield replacement, which adds time and money to what used to be a simple job. Bumpers carry sensors now too. A bumper used to just be a bumper. Ask your glass shop and your insurer whether calibration is covered before you need it.

Subscriptions and data. The camera and basic lane alerts come standard and don't need a plan. But some pickups offer hands-free highway driving that requires a paid subscription after a trial period. And connected trucks can send driving data back to the maker. Go through the privacy and connected-services settings in the screen menu and the app, and see what's shared and with whom.

And what all this replaced, the thing that never broke? Turning your head. Still works. Still free.

Where he is wrong

Hitching the camper.

For fifty years that took two people, three tries and a loud conversation conducted in the friendliest possible terms. The first time Grandpa used the hitch view, he backed the ball right under the coupler, alone, on the first try. Then he got out and stood there like a man who'd just been told his dog can read.

Grandma's hand signals were retired with full honors. She'd been requesting that retirement since roughly 1983.

He still checks everything the old way before he pulls out: coupler latched and pinned, safety chains crossed under the tongue, lights working, breakaway cable hooked up if the trailer has electric brakes. The camera gets the ball under the coupler. It doesn't check your work.

The camera also sees what no mirror ever did: the tricycle behind the rear tire, the low curb, the hitch on the truck parked behind you at the hardware store.

Then there was the four-hour drive home from the grandkids', late afternoon, sun in the windshield. The chime went off as the truck drifted toward the rumble strip. Grandpa admits the passenger was right that time. If the warning keeps going off on a long drive, the truck isn't broken. You're tired. Pull over, get out, walk around, get coffee, swap drivers.

And the settings are friendlier than he expected. Most trucks let you pick warning-only or steering help, chime or vibration, and how sensitive it is. He set his to vibrate-only warnings. The passenger now taps him on the shoulder instead of grabbing the wheel. They're getting along.

The verdict

Worth it, with conditions.

You can't buy a new pickup without a backup camera, so the conditions are mostly on the driver. It's a genuine help for anyone who tows, backs into tight spots or has little kids around the driveway, and lane departure warning earns its keep on long highway stretches. If your roads are mostly gravel and faded paint, you'll probably end up at warning-only, like Grandpa.

Three things to check before you buy:

1. Look at the camera on the lot. Have the salesperson put it in reverse with the area clear. Check the screen for glare, which guidelines it draws, whether there's a hitch view, and how easy the lens is to reach and wipe.
2. Get the feature list in writing. Ask what's standard, what's in a package, and whether anything needs a subscription after a trial. Check the current price of both the package and the subscription.
3. Find the lane assist menu before you drive off. See whether you can set it to warning-only and whether it stays that way. Then call your insurer and ask how a windshield replacement with camera calibration is handled.

He still turns his head every time he backs up. The camera doesn't mind. Neither does Grandma, who has finally put her hands in her pockets.