Research Article
A Car-Following Model Based on Quantified Homeostatic Risk Perception
Table 2
Root mean square errors of the simulation.
| Case type | Case no. | Model | Speed of car 1 (m/s) | | Speed of car 2 (m/s) | Relative spacing between car 0 and car 1 (m) | | Relative spacing between car 1 and car 2 (m) |
| Speed changes a little | 1 | DSM | 0.84 | | 1.62 | 4.87 | | 19.34 | GHR | 0.86 | | 2.37 | 5.33 | | 27.33 | 2 | DSM | 0.99 | | 1.15 | 1.96 | | 5.66 | GHR | 1.10 | | 1.03 | 7.64 | | 4.89 | Speed increases | 3 | DSM | 0.62 | | 1.13 | 3.65 | | 4.78 | GHR | 0.67 | | 1.08 | 3.90 | | 4.54 | 4 | DSM | 0.84 | | 1.31 | 1.92 | | 9.30 | GHR | 0.85 | | 1.20 | 1.76 | | 11.03 | Speed decreases | 5 | DSM | 1.56 | | 1.87 | 5.00 | | 5.04 | GHR | 1.78 | | 1.98 | 10.32 | | 2.94 | 6 | DSM | 1.35 | | 1.88 | 3.75 | | 4.63 | GHR | 1.93 | | 1.90 | 7.89 | | 1.72 | Speed changes with increasing and decreasing | 7 | DSM | 1.33 | | 1.32 | 14.53 | | 8.92 | GHR | 1.36 | | 1.43 | 14.23 | | 9.41 | 8 | DSM | 0.88 | | 1.33 | 6.49 | | 3.63 | GHR | 1.05 | | 1.46 | 14.97 | | 3.85 |
| Average | | DSM | 1.05 | | 1.45 | 5.27 | | 7.66 | | GHR | 1.20 | | 1.56 | 8.26 | | 8.21 | | DSM | | 1.25 | | | 6.47 | | | GHR | | 1.38 | | | 8.24 | |
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