An Open Access Journal
Table 1 Overall benefits of a four-lane road (cent/km per vehicle), rural strategic highways (relative to a winding two-lane road), based on Hensher and Sullivan [18]
Curviness | Road type | ||
|---|---|---|---|
2 lanes | 4 lanes, without median | 4 lanes, with median | |
Almost straight, slight and moderate | 3.0 | 7.6 | 14.3 |
Winding | 0.0 | 1.7 | 8.5 |