Hello,

Basically, on the one hand, microscopic mobility models focus on the mobility of each individual vehicle. On the other hand, the macroscopic approaches focus on the complete road flow taking into account the general traffic density, vehicles distributions, different contraints (as crossroads, traffic lights, ...), etc.

You can find more information in the following link.

Thank you Jamal for your answer. It is clear now. But I guess you forgot to put the link in the comment :)

Sorry!

Here you have the link --> http://www.eurecom.fr/en/publication/1951/download/cm-haerje-060320.pdf

And I have attached the publication, too.

http://www.eurecom.fr/en/publication/1951/download/cm-haerje-060320.pdf

Article Mobility Models for Vehicular Ad Hoc Networks: A Survey and Taxonomy

I am attaching a sample of the three levels in simulation, Macroscopic to Mesoscopic and Microscopic. I hope it help, cheers,

William 

Dear Jamal and William,

Thank you so much.

It is much appreciated.

Best regards,

Rasheed

Hi 

You can see this articles :

https://www.princeton.edu/~alaink/Orf467F10/PRT@LHR10_Conf/MacroMicroSimPRT_Beller_paper.pdf 

http://www.sciencedirect.com/science/article/pii/S089571770280019X 

with my best wishes 

Ahmed.

@Ahmed Younes, Thank you so much for your answer. Appreciated.

thank you sir for your lucid answer. it really helped me.

Hi,

These answers are very helpful. I have a related question, other than simulation, what option do I have to forecast traffic demand(or only trip generation)?

Thank you for the papers, but there exists not a very sharp mathematical definition. What if the structure of the city evolves over time. Berlin has other dimensions than Los Angeles or New York. What if the structure of the city evolves over time, building of new railway lines... The easiest way would be if there is a mathematical metric for the definition and it is very clear, but I guess there is no standard solution for it...

thank you, Jamal and William, it was very important.