Hello everybody!

I have a question regarding roundabout capacity in SimTraffic.
As I have understood SimTraffic use HCM methodology (critical gap and follow-up time parameters).

I have found approach capacity for single lane roundabout in HCM 2000 book. But what calculations you use for an approach capacity of double-lane roundabout?

Now my case study: I have double-lane roundabout. Making simulation I achieve that approach flow can be ~1200v/h, with circulation flow ~750v/h. But in real life we have a bigger capacity. How can I increase capacity in SimTraffic? Can I change critical gap and follow-up time parameters in SimTraffic?


Thank You

Marina