It's not illegal.

( Kroney, Thu 2 May 2013, 10:22, 1 reply, 12 years ago)

I thought it was only legal if the other vehicle had indicated a right turn?
Tricky on a motorway.
(localboy purveyor of pisspoor puns, Thu 2 May 2013, 10:25, Reply)

If that were true, people would be constantly getting arrested during traffic jams.

( Kroney, Thu 2 May 2013, 10:26, Reply)

It should be fucking illegal to lane hog
then questioning the legality of undertaking wouldn't be necessary.
( Kroney, Thu 2 May 2013, 10:32, Reply)

It is I think?
though I doubt if anyone gets done for it unless doing something extreme like 40 in the middle lane.
(localboy purveyor of pisspoor puns, Thu 2 May 2013, 10:37, Reply)

Forcing people to cross three lanes in order to overtake a lane hogger
on the more socially acceptable side is dangerous.

Sorry, but this subject boils my piss, somewhat.
( Kroney, Thu 2 May 2013, 10:40, Reply)

Pity you're not allowed to give them a gentle nudge as a hint.

(localboy purveyor of pisspoor puns, Thu 2 May 2013, 10:48, Reply)

On the occasions I do that, rather than undertake
I give them the beams.
( Kroney, Thu 2 May 2013, 10:49, Reply)

Seems it's a grey area
Involuntary undertaking (where the right lane slows down but you don't) is legal. Deliberately changing lanes to undertake is considered dangerous.
(localboy purveyor of pisspoor puns, Thu 2 May 2013, 10:36, Reply)

The trick is in timing it properly

( Kroney, Thu 2 May 2013, 10:37, Reply)

Like I did on the M5 the other week
in lane 1, 40 Audis nose to tail in lane 3 as usual, hoggers in 2, junction comes up, brake lights all over, 2&3 stop dead, me and the wagons happily carry on.
Some of the twats in the fast lane didn't catch us up for 50 miles or so.
(localboy purveyor of pisspoor puns, Thu 2 May 2013, 10:41, Reply)

I think it is perfectly acceptable for me to undertake at 70mph when I am already in the correct lane.

( tangledupinblue hairy badge with moving eyes, Thu 2 May 2013, 10:40, Reply)