the biker also very fast, alza got signal and slow down but the speed of the bike is too fast heading into diminishing gap

Im talking about general traffic too.
Still your fault because no way you cannot see the side like unless you're an idiot who don't know how to adjust your side mirror.

And your mentioned scenario, that's why I'll say the motobodo is indeed bodo for using the emergency lane because as the video shows, he pretty much just boxed himself in with no escape path. If he had used 1st lane and positioned himself sensibly, he will have plenty escape path. Regardless of speed.

No it's not. Again, watch the video la. Prime example why misusing the emergency lane is dangerous. The moment a car decides to turn into the emergency lane without checking, you're boxed in between the car on the right and the divider on the left. You only have just 1 escape path which is to brake.

If you're in the first lane, and sensibly positioned yourself either in the middle or to the right, you could brake or you could swerve to the right. That's already double the escape paths you had.

If the car crashed and swerved to the right, you now have the shoulder to swerve into or brake.
If the car decided to emergency brake, you can swerve left or right, or just brake.

Besides, it's the emergency lane. Any vehicle should be able to turn into that lane without having to worry about killing a motorcyclist. It's an emergency afterall.

Yes I ride.
No, you surely will be boxed in in the emergency lane if a car indeed turned into the emergency lane.

And if indeed if you're in the second lane and you're boxed in by a slow car infront, a long trailer to the left, a tailgating asshole in the back, and a busy third lane, considering the width of a lane, and the spaces occupied by most cars, you can almost always filter and put yourself in better position.

Consider getting stuck behind an underpowered kapchai infront, an asshole riding close to your ass, and that same long trailer to your right in the first lane. Then imagine the space available in that emergency lane, and usually how close vehicles in the first lane hugs the left, you can only hope your front and back don't screw up. You have no option at all to reposition yourself.

It doesn't matter if there is more traffic movement on the rest of the lane. What matters is your escape paths and your options in positioning yourself for safety.

Back to jambatan penang, in your bolded scenario, that's why it's important to ride actual bike with actual torque to accelerate out of situation like that. You swerve, accelerate to a safe position, reassess situation, then reposition as needed. You ride kapchai where you already redlining just to keep with traffic, nasib kau la. Better hope your brake makan. Tu pun kalau tak jatuh sebab takde abs and tak tau progressive braking.