Research Article
Safety-Based Optimization Model for Highway Horizontal Alignment Design
Table 3
Assumed parameters for the genetic algorithm.
| Variables | Values |
| Design speed () | 60 km/h | Annual average daily traffic volume () | 2000 pcu | Lane width () | 3.5 m | Shoulder width () | 3 m | Roadside guardrail width () | 1 m | Unit road construction cost () | 1 |
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