Please explain why you think this feature is quite important when implementing high speed signal design. What purpose does it serve and what references are you using that suggest that this is a valid technique? Thanks.

@andyfierman I found this technique from here and also found this feature in Altium Designer. this helps to reduce signal reflections better more. [https://electronics.stackexchange.com/questions/53204/how-to-join-3-traces-is-a-pcb](https://electronics.stackexchange.com/questions/53204/how-to-join-3-traces-is-a-pcb) [https://electronics.stackexchange.com/questions/194154/altium-designer-how-to-make-chamfer-on-90-degrees-tracks](https://electronics.stackexchange.com/questions/194154/altium-designer-how-to-make-chamfer-on-90-degrees-tracks)

Those are not a references. They are at best anecdotal evidence, at worst hearsay. Firstly if you are running signals fast enough where this matters you should not be joining 3 tracks all of the same width. One should be the widest trace width to achieve the desired characteristic impedance (say X Ohms) trace and must be driven by the signal source. The others should be narrower to give a higher characteristic impedance (for simplicity say both are 2X Ohms) such that the total paralleled impedance looking into them equals that of the widest track and each narrower track must be load end terminated by that tracks characteristic impedance. But if you are running signals that fast you'd know all this already because you will have taken a course on MM Wave Microwave Design techniques or on Design for Signal Integrity as applied to 100Gbps and upwards data communications networks. And you probably won't be using a free online EDA suite to do it. If you are not then sorry but you are almost certainly wasting your time with such finessing techniques. Please do some searching of real sources of information such as Howard Johnson's website, courses and books on High Speed Digital Design and Eric Bogatin's BeTheSignal website. [https://www.edn.com/when-to-worry-about-trace-corners-rule-of-thumb-24/](https://www.edn.com/when-to-worry-about-trace-corners-rule-of-thumb-24/)