Investigating the Transferability of Calibrated Microsimulation Parameters for Operational Performance Analysis in Roundabouts

Table 12

Comparison of parameters calibrated for Marconi and Cosmai roundabouts.

Parameters	Low level (−1)	High level (+1)	Default VISSIM value	Marconi calibrated value	Cosmai calibrated value	Diff.	% of Change
Desired Speed (average) (Km/h)	20	50	50	20.01	26.42	−6.41	−21.3
Observed vehicles ahead	1	4	4	4	4	0	0
CC0	0.5	3	1.5	0.50	0,53	−0.03	−1.2
CC1	0.5	1.5	0.9	0.52	0,55	−0.03	−3
CC2	1.5	6	4	2,21	2.27	−0.06	−3
CC3	−15	−4	−8	−7.06	−7,15	−0.09	−0.8
CC6	2	20	11.44	8.01	8.29	−0.28	−1.5
CC7	0.1	0.3	0.25	0.27	0.28	−0.01	−5
CC8	0.5	3.5	3.5	3.48	3.46	0.02	0.6