50mph on motorway due to road works

neilmcl

bugslet wrote: »

In the 25 years of commuting early hours between Runcorn and Manchester on the M62, I've had that scenario a few times. I've come up behind a vehicle in the outside lane that isn't overtaking anything in the middle lane, I don't flash, I don't ride on the bumper, but if they aren't going to move over, then sometimes I'll undertake, again not being aggressive and they speed up, or try to cut in. So it does happen.

And before people start, I've been told off for undertaking on here and I've been told off for just sitting behind the vehicle. Can't win.

You're not "undertaking", you are passing the vehicle to your right as the lane you're in is moving quicker than his.

Jackmydad

neilmcl wrote: »

You're not "undertaking", you are passing the vehicle to your right as the lane you're in is moving quicker than his.

That's what I thought.
You haven't moved into the left hand lane to overtake, which would be "undertaking". You are driving along normally and the lane to your right is for some reason moving slower.
As far as self appointing "traffic safety police" go, their own driving doesn't stand much scrutiny.

bigadaj

Strider590 wrote: »

I don't post footage from within 2 miles of where I work or where live, not that it matters because what I was asking was whether the events described can be explained away as a mistake or a bad coincidence or whatever........
Perhaps she didn't know I was there and worried about driving in the rain she decided to change lanes and test that her brakes still worked????


And the other day, perhaps the old guy that almost got himself T-boned on a mini-roundabout, did not sound his horn as a rebuke to me briefly sounding mine, perhaps he was using his horn to apologise???? Perhaps then he didn't slow down to 15mph to further aggravate the person he'd just cut up and was in fact offering me an opportunity to overtake (which I accepted) and then once again used his horn to apologise????
And finally perhaps his crazy arm waving (and flashing of headlights), was in fact him trying to swat a wasp?

Wow, I see now how I misinterpret everything............. :rotfl:

Do they all get a 'Rev bomb'?

Car_54

Jackmydad wrote: »

That's what I thought.
You haven't moved into the left hand lane to overtake, which would be "undertaking". You are driving along normally and the lane to your right is for some reason moving slower.
As far as self appointing "traffic safety police" go, their own driving doesn't stand much scrutiny.

"Overtaking" is defined as passing while travelling in the same direction, whether or not you change lane. Also, it applies on the left or right.

"Undertaking" is correctly termed overtaking on the left. Again, change of lane is irrelevant.

JP1978

Strider590 wrote: »

Cars travelling slower than truck is incredibly dangerous and truck drivers hate it, because a car sitting in their blind spot can easily end up getting T boned and pushed 1/2 a mile down the motorway when they move back over to lane 1.

Yes but in these circumstances the car shouldn't be 'hidden' below the windscreen unless the HGV driver failed to see it while making progress on the car! Its not like the car gets sucked under the truck is it as it closer and the driver can now ignore it!

Altarf

Strider590 wrote: »

50mph on your speedometer is not 50mph, probably closer to 45mph.

Nonsense. Possibly slightly under 50, but not 45.

Strider590 wrote: »

Truck drivers very often go by GPS speed, which is much more accurate.

So they use something more accurate. Bully for them, but they are know car drivers will be using their speedo.

Strider590 wrote: »

Speeding prosecutions would not start until 56mph GPS, so no risk to truck drivers as their trucks are limited to 56 GPS anyway.

50 MPH is the limit and their choice if they want to gamble their licence.

Strider590 wrote: »

Cars travelling slower than truck is incredibly dangerous and truck drivers hate it, because a car sitting in their blind spot can easily end up getting T boned and pushed 1/2 a mile down the motorway when they move back over to lane 1.

So if it is incredibly dangerous why is the truck driver trying to overtake a car they know will be driving at an indicated 50. Are these truck drivers a bit dim?

PhilStation

Strider590 wrote: »

50mph on your speedometer is not 50mph, probably closer to 45mph.
Truck drivers very often go by GPS speed, which is much more accurate.

Speeding prosecutions would not start until 56mph GPS, so no risk to truck drivers as their trucks are limited to 56 GPS anyway.

Cars travelling slower than truck is incredibly dangerous and truck drivers hate it, because a car sitting in their blind spot can easily end up getting T boned and pushed 1/2 a mile down the motorway when they move back over to lane 1.

Speedometers are not calibrated and so not completely accurate but I disagree that GPS would be more accurate. There is a delay in sending and receiving the information and they are never more accurate than around 6 metres so when travelling at any speed, that offers a considerable margin of error. A truck's speedo is more likely to have been calibrated as they have to have limiters fitted.

The Police and other prosecuting authorities do not use GPS to measure speed. They use fixed points, radars etc, not GPS.

The reason the truck driver is catching you up is because he knows the cameras are rarely set lower than 58mph - 3% + 3mph or whatever ACPO guidlines are now (my days of traffic are over. )

PhilStation

waamo wrote: »

Trucks aren't allowed in the outside lane.

It may be there is a lane closure reducing the road to two lanes?

That's the only circumstances I can see it should be happening.

Jackmydad

Car_54 wrote: »

"Overtaking" is defined as passing while travelling in the same direction, whether or not you change lane. Also, it applies on the left or right.

"Undertaking" is correctly termed overtaking on the left. Again, change of lane is irrelevant.

If you look at rule 268 of the highway code, which I have now, but hadn't when I originally posted, it does say not to move into the LH lane to overtake. . .

Nodding_Donkey

PhilStation wrote: »

Speedometers are not calibrated and so not completely accurate but I disagree that GPS would be more accurate. There is a delay in sending and receiving the information and they are never more accurate than around 6 metres so when travelling at any speed, that offers a considerable margin of error. A truck's speedo is more likely to have been calibrated as they have to have limiters fitted.

This may be true regarding accelerating/decelerating where there will be a slight lag but at a steady speed on flat ground they are more accurate than a speedo.