Hey there, i'm pretty sure it's the time mean speed. However, i don't know how to get the space mean speed directly. You could estimate it by estimating the standard deviation of the space mean speed and then transform it.

Alternatively you could use a measurement point and calculate the value by hand.

Best regards

The best way is to measure the average travel time over a road segment. Then you divide by the distance of the measured segment and you have the average speed on a link segment ;-).

If you want to have more details, just export raw data of the travel time of every vehicle, and automate it with a VBA script or just do it in excel. Then you can divide it in time segments to see the evolution of the average speed and their standard deviation.

Thank you so much for your answers

You can get the travel time first

Hi Umair,

the average speed in the link segments is space mean speed. It is computed by adding up the distances travelled of all vehicles in the segment during all time steps in the measurement interval divided by the sum of all time spent in the segment by all vehicles. The vomule and density values in the segments are also computed according to the generalized definition in time and space (q = sum of all distances travelled / (segment length * measurement interval) and k = sum of all time spent / ...)

Best regards, Peter

Thank you Mr. Peter. I appreciate your help.

Thank you Mr Tobias, I will try this exercise for sure. :)

Hi,

Just a follow up question: How did you get link segment speed? Also, is it for each individual lane?

Ishtiak Ahmed Getting Link speed is not a big Deal , you can set the Parameters in Result window ..You can Get it for each Lane..