I remember joining the slow lane in front of a lorry to take the next exit, a big enough gap between the car in front and the lorry behind. The lorry took a dislike to my manoeuvre and decided to speed up to within a metre from my car, flashing his lights and beeping his horn, all at speed on a busy motor way.
I can honesty say I did nothing wrong, however the lorry driver didn't like it.
Therein lies your problem. Going too slow to safely merge. The lorry would have been doing a maximum of 60mph ( governed by law ), so if you trundled in front of him perhaps he didn't 'speed up' & instead just held his pre-set speed.
As stated previously in this thread, it's up to the traffic joining the motorway to adjust their speed to the speed of the lane that they are joining. Not for the traffic on the motorway to 'give way' to joining traffic.
Speaking of 'give way' the road markings on the end of the slip roads are in fact give way markings.
Take a hypothetical situation: You are driving down a local road (not a m-way), you approach a Give Way junction, there is traffic approaching on the road that you are about to join, they have priority, you are obliged by law to give way. So what do you do ? just pull out ? No! So why should you treat a m-way/dc slip road any differently ?
Personally, when i'm driving in lane 1 & approaching a junction where there is an 'on' slip road I will move ( if possible ) into lane 2 to give joining traffic space to proceed. If I can't move into lane 2 due to traffic then I will hold position in lane 1. The amount of drivers that blindingly, automatically, just pull onto the m-way & expect the traffic already on the road to give way to them is unbelievable!
An incident the other week. Driving down the M61 south. At the Reebok junction, I spot 2 cars coming down the slip road so I pull out into lane 2, the nearest other vehicle in front in lane 1 is a good 200metres ahead at least, 1st car comes down the slip road & goes straight out into lane 2 right in front of me at about 60mph ( i'm doing an indicated 75 ) What the **** ?? That I didn't expect. Thank god for good brakes on my car!
Why the **** do people insist on calling lane 1 the 'slow lane'? FFS. There's no such thing.