Automatic braking alone is a huge deal: if you're a bit late in braking, you get a warning. If you go past that, brakes auto apply. When configured correctly, I don't even notice it's there 99.9% of the time...and the times I do I'm glad it's there, because the beep pulls you out of a momentary distraction.

The only problem is not every car on the road has it yet.

>Automatic braking alone is a huge deal

Except I had to turn it off for my Ford E-Transit, because it will freak out at nothing. Sometimes it screams at me for cars that aren't even in my lane that suddenly slowed. Sometimes it misjudges a ripple in the crappy asphalt here as an obstacle I'm going to hit. There is a high chance its going to brake for no reason at all and cause an accident.

I left the warning system on, but I will never give it control over the brakes.

Anecdotally, the only times I've ever noticed these chimes and the auto-braking (even automatic rolling-up of windows), it was false positives, and it was mildly terrifying: for a brief and unexpected moment I was no longer in control of my vehicle. [Recent Honda Civic and Audi A3 models]

> The only problem is not every car on the road has it yet.

Yep. ADAS should be mandatory like seat belts and airbags. A regulatory body should be able to come up with a minimum standard for it.

Automatic braking can also be hazardous! In a front-wheel drive car, understeer is a fact of life. When you're approaching a bend in the road with your foot in the accelerator, you're going to be pointed at the guardrail, since the car's going to rotate around the bend when lift your foot off the gas. Now imagine you're driving a car with AEB and it slams on the brakes while you were lightly accelerating towards the guardrail, right before you were going to lift your foot off the gas. What was a perfectly routine curve just turned into complete loss of control, and there's a very good chance your car's going straight into the guardrail!

Even when it doesn't slam on the brakes, if you were concentrating on the road, those jarring beeps can just as easily break your focus on driving as they can break your focus on a distraction. I think it's better to avoid distraction by keeping cruise control off, and you can compensate for having human-level reaction time by following at a safe distance and staying in an appropriate gear or setting an appropriate level of regenerative braking to avoid mindlessly getting too close to the car in front of you.

I think that too often, driver assist features are being added to cars to compensate for the other features (like adaptive cruise control) that encourage drivers to mentally disengage from the task of driving. There's also the fact (well, opinion) that driving a car without electronic assists and nannies is fun and engaging (especially on back roads with the windows down and the radio up). Riding in an autonomous vehicle is just as dull as riding on public transportation, all while being less efficient, less social, and worse for the environment.

It would be interesting if we could somehow test how the reduction in crashes with the introduction of driver assists would compare with if we had just banned cruise control, introduced minimum visibility and minimum suspension stiffness standards, and mandated manual transmissions.