Dashcams and license plate recognition

Rroff · 4 Aug 2020 at 16:10

jpaul said:
um you mean the one going up the hill , where you ... went for it , concerned with following car rear ending.

Concern for what the vehicle behind me was doing delayed my reaction a bit - it didn't change my approach.

jpaul said:
I've yet to see dashcam coverage , which has good night time resolution/definition, versus human vision,

Proper night time no - but many these days enhance the image in low light conditions (in this case it was dusk) making some things stand out more than they do in person.

(Mine is pretty cheap so results are a bit mixed but it has 4x IR for low light boost and "WDR Technology" to adjust exposure "providing a better view in dark environment").

Semple · 4 Aug 2020 at 16:17

Kenai said:
Half an hour watching the (often bizarrely entertaining) dashcam compilations on YouTube will show you why dashcams owners have the stereotypes of being planks.

It's obviously a completely skewed perspective but you can't help wondering about the sheer volume of the clips that show the camera owners borderline deliberately having completely avoidable accidents because "It's on dash camera mate, it was my right of way", rather than just accepting some people drive like pricks and it's probably easier to just let them cut you up at the roundabout and forget about it.

I've actually watched quite a number of these and bikers footage, and a good 75% of the clip i would place the driver with the camera in the wrong. They do catch the odd one where someone's cut them up on a roundabout, or taken the wrong lane etc. But majority of the time you can see them speeding across a junction as if to catch another driver out, whereas if they drove normally, the other driver would have easily made it across the junction without any issue.

Raymond Lin · 4 Aug 2020 at 16:19

Me being YouTube star!

Rroff · 4 Aug 2020 at 16:25

Semple said:
I've actually watched quite a number of these and bikers footage, and a good 75% of the clip i would place the driver with the camera in the wrong. They do catch the odd one where someone's cut them up on a roundabout, or taken the wrong lane etc. But majority of the time you can see them speeding across a junction as if to catch another driver out, whereas if they drove normally, the other driver would have easily made it across the junction without any issue.

One of the UK dash cam channels on YouTube - several of the regular contributors should be taken off the road their driving is more dangerous than the people they are filming.

IAmATeaf · 5 Aug 2020 at 09:20

Rroff said:
One of the UK dash cam channels on YouTube - several of the regular contributors should be taken off the road their driving is more dangerous than the people they are filming.

I've also noticed this, they seem to court danger in order to presumably get a good clip? The European vids are the worst, they all seem to purposely drive into each other as either they feel wronged or just to prove a point.

Nasher · 5 Aug 2020 at 09:41

This one made me chuckle a while back:

jpaul · 5 Aug 2020 at 09:59

Raymond Lin said:
Me being YouTube star!

I didn't get it, did the folks on the roundabout have a light against them , passing your entrance ? The next light, you stopped for, and they ran, might suggest they didn't.

moreover - could you save the video at a higher bitrate ? that would have made the evo's plates, more detailed, the exposure, looks good enough to have captured it.

edit: netflix talked about adaptive codecs, that enhance the bitrate, given to peoples faces, a similar deal is needed for reg plates

Basher · 5 Aug 2020 at 10:17

jpaul said:
I didn't get it, did the folks on the roundabout have a light against them , passing your entrance ? The next light, you stopped for, and they ran, might suggest they didn't.

moreover - could you save the video at a higher bitrate ? that would have made the evo's plates, more detailed, the exposure, looks good enough to have captured it.

edit: netflix talked about adaptive codecs, that enhance the bitrate, given to peoples faces, a similar deal is needed for reg plates

They ran through a red light, simple as that really.

The police already have ANPR, we certainly don't need a bunch of vigilante motorists with the same.

IAmATeaf · 5 Aug 2020 at 10:20

Didn't the white car run 2 sets of reds? To be honest I've seen that loads of times with lights on roundabouts, people seem to somehow miss them or logically deduce that it's a roundabout so they can't apply.

jpaul · 5 Aug 2020 at 10:20

ok so he was playing agent provocater against their priority when he joined

Quartz · 5 Sep 2020 at 00:18

And this thread shows why we need numberplate recognition.

Raymond Lin · 5 Sep 2020 at 01:26

jpaul said:
ok so he was playing agent provocater against their priority when he joined

Huh? Playing what and what?

I followed lane disciplined and traffic light signal, I caught 2 cars running 2 different sets of red lights. They have no priority because my lights were green, theirs were red.

jpaul · 5 Sep 2020 at 15:00

Raymond Lin said:
I followed lane disciplined and traffic light signal, I caught 2 cars running 2 different sets of red lights. They have no priority because my lights were green, theirs were red.

we can't see what colour their first light was !,
ie. if you didn't know the roundabout, like us, just because I have a green light before entering , wouldn't mean, they had a red, so, could have been you jumping in.

Kenai · 5 Sep 2020 at 15:08

jpaul said:
we can't see what colour their first light was !,
ie. if you didn't know the roundabout, like us, just because I have a green light before entering , wouldn't mean, they had a red, so, could have been you jumping in.

I've never seen a traffic light controlled roundabout that gives two competing traffic priorities a green light simultaneously.

chaparral · 5 Sep 2020 at 18:37

Mcnumpty2323 said:
Reverse pedal to slow down?
Can't do that unless a bike has a fixed wheel I don't think
Ie not geared though that's probably the wrong term

I got a kids bike (5 to 8 year old) that you reverse pedal to brake the rear wheel...

After searching google seems like pedal back brakes work by using a "coaster hub" or "coaster Brake"

Raymond Lin · 5 Sep 2020 at 19:09

jpaul said:
we can't see what colour their first light was !,
ie. if you didn't know the roundabout, like us, just because I have a green light before entering , wouldn't mean, they had a red, so, could have been you jumping in.

why would I be “jumping in”, did you not see the green light that I went through?

did you not also see the 2nd sets of light that was red when I stopped and they went through?

I confused where you even begin to defending them? Have you ever seen a traffic lights controlled roundabout where it gives 2 competing lanes goes green at the same time?

Your logic is very flawed as is your observation here.

Mcnumpty2323 · 5 Sep 2020 at 20:12

chaparral said:
I got a kids bike (5 to 8 year old) that you reverse pedal to brake the rear wheel...

After searching google seems like pedal back brakes work by using a "coaster hub" or "coaster Brake"

Yeah when I was a kid fixed wheel bikes weren't uncommon
Then they kind of died out when derailleur gears took over
Didn't realise they had made a comeback

jpaul · 5 Sep 2020 at 20:59

Raymond Lin said:
why would I be “jumping in”, did you not see the green light that I went through?

did you not also see the 2nd sets of light that was red when I stopped and they went through?

yes, obviously agree they should have stopped at the second light (on the roundabout) where you stopped
but, as you joined the roundabout, even if you have a green light you still have to give way to the right, it doesn't give you priority onto the roundabout,
or indicate that traffic couldn't be coming from the right, maybe the highway code says how to interpret a green light entering a roundabout , does it indicate priority ?
(as Kenai said)

I'd always assumed you can have lights entering a roundabout that, depending on traffic conditions maybe controlling access to that roundabout,
but even if green, you could encounter traffic from the right, so have to give way.

Raymond Lin · 5 Sep 2020 at 22:08

jpaul said:
yes, obviously agree they should have stopped at the second light (on the roundabout) where you stopped
but, as you joined the roundabout, even if you have a green light you still have to give way to the right, it doesn't give you priority onto the roundabout,
or indicate that traffic couldn't be coming from the right, maybe the highway code says how to interpret a green light entering a roundabout , does it indicate priority ?
(as Kenai said)

I'd always assumed you can have lights entering a roundabout that, depending on traffic conditions maybe controlling access to that roundabout,
but even if green, you could encounter traffic from the right, so have to give way.

I don’t have to give away to my right in this instance because no one would expect anything from my right because the light they just went through was red.

So you understand that? It’s not really a normal roundabout but a traffic junction. I had green, they had red. It’s not their right of way, they has no right to be where they were. If I am stopping every time I see traffic to my right at that junction I would never ever leave since that means stopping when the lights is red and stopping when the lights are green! The only time I would ever move off is if there are no cars to my right and green. What kind of traffic light system is that?

Everything you wrote do not apply because they should have stopped.

WJA96 · 7 Sep 2020 at 06:26

If the OP is still around/interested then yes is definitely available. Not exactly inconspicuous as the camera is massive but we put 3 x Dahua ANPR cameras into a patrol van with a mobile recorder for a large festival in Suffolk last year and they just drove it round the car park logging car registrations. The images are quite low resolution (1080P/2MP) but it’s not really relevant as you use the optical zoom to get the licence plate area in the field of view.

3 ANPR cameras at £400+VAT each and the same for the mobile recorder, so call it £2500 installed. The processing is done on the cameras, the recorder just logs the results from the cameras and pings out alerts when target registrations are matched. We also do a very nifty mobile PTZ so you can park your van anywhere in the car park and point the camera at the entrance to do ANPR. They’ve been using them a lot in supermarkets in the Greater Manchester area.