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In my opinion
Roundabout is controling flow of traffic but less safer while trafic light is more safer but do not provide continous flow of traffic
Hi
In my limited professional experience, it is important to note that above question can not be answered without consideration of Human/Regional cultural aspects. Keeping all other decision parameters same - round about will be a preferred option in cities and countries where people have high degree of respect of mutual respect, perform Self-Organizing and have Self Discipline in obeying traffic rules. However traffic light will be more secure option in other case. One can observe this difference between traffic flow in South Asian countries and and other parts of world (like Japan, EU etc).
Thanks for invitation Ksenija Kancelak ,
Besides that i am not an expert in traffic and transport field , however as a general public using roads and facing traffic daily , so my vote will be diffinetly in the favour of roundabout.
Agree with Muhammad Farooq and Hrvoje Kancelak for their views.
roundabout is safer and provides a continuous flow of traffic
Regarding security Traffic lights is more safe
While roundabout is for more fluid traffic
