Microscopic Traffic Simulation Calibration Level for Reliable Estimation of Vehicle Emissions

Table 3

Calibration parameters and calibrated values.

Calibration parameters	Lower bound	Default value	Upper bound	Calibrated value in each level
				L0	L1	L2	L3	L4	L4-pc
Coded traffic flow of mainlines (v/h)	9000	250	13500	11900	12850	11050	11450	10900	12700
Look ahead distance (m)	150	250	350	210	260	280	290	310	290
Average standstill distance (m)	1	2	3	1.2	1.4	1.5	1.1	1.2	1.5
Additive part of desired safety distance	1	2	3	1.3	1.7	1.6	1.3	1.7	1.8
Multiple part of desired safety distance	2	3	4	2.6	2.1	2.7	2.2	2.2	2.3
Max Decel. of subject vehicle (m/s^2)	−7	−4	−1	−6.8	−5.9	−6.6	−6.7	−5.6	−6.4
Max Decel. of trailing vehicle (m/s^2)	−7	−3	−1	−6.7	−6.7	−6.5	−6.1	−6.1	−6.3
Accepted Decel. of subject vehicle (m/s^2)	−5	−1	−0.5	−3.1	−4.3	−2.9	−3.3	−3.7	−3.6
Accepted Decel. of trailing vehicle (m/s^2)	−5	−1	−0.5	−3.4	−3.7	−3.5	−2.3	−2.7	−2.9