Yea thats one thing I feel KV drivers are better than JB. KL people give signal because its actually work.

In KV, when you give signal to switch lane, there are very high chance whoever behind will give way in any situation. All you have to do is not hesitate and move promptly.
In JB you give signal ppl give no shit . Giving way culture is simply not in there.
Riding bike in high roads in JB is much more scarier experience then in Kl.