Why are other drivers "flashing" at Dd?

[paranoidmum9]

By flashing I mean their lights not their bits 🙈
The obvious answer is her lights don't work properly but we've checked and they are fine.
It only happens at night so it's not anyone warning her off a speed van.
She's a new driver restricted to 45mph (NI) and I've her app that tracks her driving score which is always high so she's not driving like a boy racer.
When she told me I thought she was maybe just mixing up the lights on oncoming traffic jumping when going over pop holes/speed bumps etc but I was in the car with her last night and it happened twice so I know she's telling the truth.
She drives a typical small new driver car and even though she's got the pass plates on and has to drive slow it's only ever oncoming cars that do it as they are passing her so it's not like it's knob drivers behind her getting frustrated by her driving.
I feel like I'm missing something really obvious here?

Are her headlights on full beam and she's blinding oncoming traffic?

Is she not always remembering to dip her headlights when there is oncoming traffic?

Is her main beam/high beam on?

Is she accidentally driving with the full beam on? That’s an easy enough mistake to make and other drivers are letting her know ?

Is she dipping her headlights so as not to dazzle oncoming drivers?

If it happens on dipped beam her lights may be badly adjusted or set too high so it still dazzles in coming drivers. Many cars have settings to adjust the height of headlights, check the manual and check they are set correctly.

If not her high beam then it's possible she's knocked her front fog lights on and not realised it

If her lights are on dip, are they maladjusted so that they dazzle oncoming drivers?

Are her lights set too high, so they are dazzling oncoming drivers even on dip? There’s a roller switch to the right of the steering column on most cars where you can adjust them, so that, for instance, you have a lot of weight in the back, you can lower the angle so the higher front end doesn’t cause dazzle. The manual for her car will show you where it is and what the settings should be at different degrees of laden.

Could the other cars be driving over a bump and it 'looks' like they are flashing her but it's just the cars tipping up and down instead?

Check the lights at night time. I'm guessing they're dazzling other traffic for whatever reason

We live on a small stretch of dual carriageway with a round about at each end about half a mile apart and it's been annoying me so much I made her drive up/down the other night with me driving the other way. Her lights were still fine and I couldn't even tell it was her till I was inline with her as her lights were just like everyone else's.
I suppose it's possible she's hitting the high beans but she 100% never the night I was in the car and as we live at the edge of the city and she mostly drives into the city she knows she doesn't need full beams

You need to check the alignment of the headlights and the type of bulbs in the lights. The owners manual should show the pattern and rough position the headlights should make if you park the car a certain distance from a wall - having one headlight misaligned could be blinding on coming drivers. High Intensity Lights - LED’s or xenon types might be too bright - if they are not the original legally compliant type.

I would of said fog or high beams also.

If she has music on - perhaps she hasn’t noticed that her indicators are still clicking away? I do that sometimes. I don’t get flashed for it though tbh.

I'd only ever flash a car if they hadn't turned on their lights. Some flash as a warning there's a speed trap or accident around the corner. If none of these are the reason then it's odd.

Are they actually flashing at her? I drive windy, bumpy country roads and I find that when cars with the newer bright lights come over a bump they look like they’re flashing as the brightest part of the light catches your eye. But they’re not actually flashing at all. Baffled me for a while until I worked it out.

She's a new driver restricted to 45mph
Is this under the speed limit? Eg is she doing 45 on a 50 or 60 road?

And are the flashing from behind or on the other side of the road coming towards her?

I had this once as an experienced (25 years )driver but with a new ( to me) car - the headlights were set at too-high an angle and we're dazzling oncoming drivers even when on a normal setting (ie, not full beam).
Local garage sorted them for no charge - might be worth your DD taking her car in?

I noticed in the winter just gone the number of cars that had front lights but not rear , some cars (my own does this) will automatically put the front headlights on.

Late January , late evening , driver on the M25 blissfully unaware that her dark grey car was almost invisible (it was a woman, I saw as she went off eventually on a filter lane)
I did give her a quick dibdib of my lights but I was worried she'd think I was road raging her and it made bugger all difference

I think she’s got her fog light on and bling oncoming traffic. I had this and took me ages to figure out why. On my car those lights are turned on when full headlamps and move the lever back. I was doing it with knee without reaslising.

I've flashed a few cars at night recently as they had no rear lights on. Front lights were on but no rear lights. I dont know what setting it is but could it be this.

When I drove a BMW people used to flash their lights at me all the time when it was dark. I think the dipped beam was really bright and people thought I had the full beam on, maybe similar?

All new drivers in NI are restricted to 45 mph everywhere for a year post passing their test.

I suppose it's possible she's hitting the high beans but she 100% never the night I was in the car and as we live at the edge of the city and she mostly drives into the city she knows she doesn't need full beams

she may know she doesn’t need them, but it is very easy to knock the lever and not realise they’re on.

I’d also say it could be the newer modern cars- i often think I’m being flashed but their lights are so bright any time they hit a bump or pothole it looks like a flash.