Research Article
Comparing Three Lane Merging Schemes for Short-Term Work Zones: A Simulation Study
Table 1
Calibration and Validation Runs of the early SDLM.
| | | Early SDLMS calibration using travel time | | | | Base Driving Behavior Parameter Set |
Run Number | Car following model default parameter | Default | Run 2 | Run 3 | Run 4 | Run 5 | Run 6 | Run 7 | Run 8 | Run 9 | Run 10 | Run 11 | Run 12 |
| CC0 Standstill 4.92 ft | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | CC1 Headway 1.20 s | 1.2 | 1.50 | 1.50 | 1.50 | 1.50 | 1.25 | 1.10 | 1.10 | 1.00 | 0.50 | 0.50 | 0.50 | CC2 Following 13.12 ft | 13.12 | 50.00 | 40.00 | 35.00 | 35.00 | 35.00 | 20.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | CC3 Threshold −8 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | −8.00 | CC4 Negative −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | −0.35 | CC5 Positive F 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | CC6 Speed Del 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | CC7 Oscillation 0.82 ft/sec2 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | CC8 Standstill 1.48 ft/sec2 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | 11.48 | CC9 Acceleratil .92 ft/sec2 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 | 4.92 |
| Lane changing model default parameter values | | | | | | | | | | | | |
| Own | Trailing | | | | | | | | | | | | | Maximum −13.12 ft/s2 | −9.48 ft/s2 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −9.48 | −1 ft/sec2 100 ft | 100 ft | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | Accepted −3.28 ft/s2 | −1.64 ft/s2 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 | −1.64 |
| Waiting time before: 60 s | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | 60.00 | Min. headway from 1.64 ft | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | 1.64 | To Slower lane if Co 11.00 s | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | Safety reduction Fat 0.1 | 0.1 | 0.50 | 0.45 | 0.45 | 0.35 | 0.35 | 0.20 | 0.20 | 0.25 | 0.25 | 0.50 | 0.40 | Maximum decelerat −29 ft/s2 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 | −29.00 |
| Travel time evaluation | | | | | | | | | | | | | Average simulated travel time (sec) | 240.1 | 253.63 | 250.27 | 244.03 | 243.11 | 241.60 | 239.50 | 239.26 | 238.60 | 236.49 | 222.10 | 234.60 | Average observed travel time (sec) | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | 230.77 | % Error | 4.04% | 9.91% | 8.45% | 5.75% | 5.35% | 4.69% | 3.78% | 3.68% | 3.39% | 2.48% | −3.76% | 1.66% |
| -test | 0.350 | 0.001 | 0.006 | 0.157 | 0.1873 | 0.27 | 0.365 | 0.361 | 0.38 | 0.54 | 0.35 | 0.53 |
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