Glass is directly obstructing the field of view. It is not a defensible position to be frank. If it is turned off, well and good, but still the "eyepiece" can cause problems like glare, reflection, transparency problems. If it is turned on, no matter for what purpose, then it is a distraction and a direct one. Why do you want your one organ that is keeping you safe on road, be bombarded with information other than the one in its periphery?

>but still the "eyepiece" can cause problems like glare, reflection, transparency problems.

I'm going to go out on a limb and assume you don't drive much.

I spend a lot of time on the road (60,000+km this year). There are a multitude of things to distract you behind the wheel, from eating, phones, stereos, day-dreaming, other drivers, nature, whatever. It's endless. If having a small eye piece is distracting to you, by all means don't wear one. But don't project your inability to maintain focus on all other drivers.

A persistent illumination 2 inch in front of my eye, can be a major cause of distractin and fatigue though. Also glancing at phones do cause accidents. You are also projecting the ability to focus with an eye piece on, on all drivers. How about extensive testing before letting it on road?

The display is only on for a couple seconds at a time.

I personally fall on the other side; why not extensively test before banning. We live in a society that jumps to conclusions. I believe we should have a proper understanding of something before deciding to make laws relating to it. What about the positive benefits. Also, do you really expect them to do the research after banning it? Look how long it has taken the FAA to even start reducing the ban on mobile devices.

We already have laws relating to it - it's basically a mobile device. It's a special mobile device, and may deserve an exception, but it should be shown that it's less harmful than the other devices that were banned based on evidence.

No, it should be shown that it's just as harmful as other kinds of screens before being banned.

I've lived in a country which forbade everything by default unless law explicitly allowed it. I guarantee you don't want to go this way.

Your arguments are about as effective against sunglasses and other displays not directly in front of your eyes (others have already mentioned dashboards, but the HUDs projected on some windshields are a better analogy).

She's been cited, not convicted, so she's free to argue that it was off in court. The legality of her actions is not determined by the actions of the officer, particularly given that she cited, not arrested.

Definitely agree with you that I'd prefer a HMD or HUD in general to look-down instrumentation.

A special purpose HMD for GPS sounds great.

A general purpose head mounted entertainment system that may or may not be used to display GPS along many other things while driving is a terrible idea.