Recently I left Newbury heading north on the A34 (2 lanes, dual carriageway, NSL) early morning. Little traffic at first and I set myself up doing 65mph in lane 1. Eventually I was closing on a whole pile of traffic doing the tailgating thing in lane 2 but lane 1 continued to be clear. I moved to the far left of lane 1 and continued at 65. This resulted in me slowly undertaking, for several miles. I didn't weave and no lane 2 drivers felt the need to return to lane 1.
I offer the following excerpts from the Highway Code:
Rule 137 (Dual carriageways)
On a two-lane dual carriageway you should stay in the left-hand lane. Use the right-hand lane for overtaking or turning right. After overtaking, move back to the left-hand lane when it is safe to do so.
Rule 163 (General)
includes "stay in your lane if traffic is moving slowly in queues. If the queue on your right is moving more slowly than you are, you may pass on the left"
Rule 264 (Motorways)
You should always drive in the left-hand lane when the road ahead is clear...Slow-moving or speed-restricted vehicles should always remain in the left-hand lane of the carriageway unless overtaking.
Rule 268 (Motorways)
Do not overtake on the left or move to a lane on your left to overtake. In congested conditions, where adjacent lanes of traffic are moving at similar speeds, traffic in left-hand lanes may sometimes be moving faster than traffic to the right. In these conditions you may keep up with the traffic in your lane even if this means passing traffic in the lane to your right.
Have at it!
I offer the following excerpts from the Highway Code:
Rule 137 (Dual carriageways)
On a two-lane dual carriageway you should stay in the left-hand lane. Use the right-hand lane for overtaking or turning right. After overtaking, move back to the left-hand lane when it is safe to do so.
Rule 163 (General)
includes "stay in your lane if traffic is moving slowly in queues. If the queue on your right is moving more slowly than you are, you may pass on the left"
Rule 264 (Motorways)
You should always drive in the left-hand lane when the road ahead is clear...Slow-moving or speed-restricted vehicles should always remain in the left-hand lane of the carriageway unless overtaking.
Rule 268 (Motorways)
Do not overtake on the left or move to a lane on your left to overtake. In congested conditions, where adjacent lanes of traffic are moving at similar speeds, traffic in left-hand lanes may sometimes be moving faster than traffic to the right. In these conditions you may keep up with the traffic in your lane even if this means passing traffic in the lane to your right.
Have at it!