Recommended approach Clause Samples
Recommended approach. It is recommended that thorough assessments of environmental drivers are undertaken periodically, and ideally following the completion of comprehensive assessments such as those described above (thereby accessing verified datasets). These assessments should be resourced and drafted centrally, with adequate time and resources for consultation with national experts, who may undertake further consultation with site managers etc. The draft assessments would ideally be prepared and available online in a system that accommodates interaction and feedback. It is recommended that these assessments draw on information gathered as part of the two centralized assessments described above. However, there are substantial differences between the two threat classification schemes described above (IUCN compared with Article 12). Comparison at the top level (Figure 4.1) shows that many of the Article 12 threats cut across more than one of the IUCN threats, and vice versa. Unfortunately, this means that by choosing any one scheme, it is not possible to automatically translate possible results from the other.
Figure 4.1: Comparison of the threat classification schemes adopted by the IUCN and that used in Article 12
Recommended approach. Considering the service features of Express buses, and the capabilities of existing tools, the recommended approach will utilize multiple methods as illustrated in Figure 3. Essentially this approach incorporates the benefits of mode choice model (to account for the influence of highway network performance) and TBEST (to provide stop level estimates for detailed service planning). At corridor level, the potential demand between identified high-demand OD pairs will be estimated first. Both STOPS and other forms of mode choice models (regional travel demand models or incremental logit models) will be evaluated for the suitability for this task. The demand for the express route will serve as a reference total for TBEST stop level estimation. Service attributes could be developed through multiple alternatives/scenarios as TBEST usually works. Alternatively, integrated modeling approach may be another potential approach that can be explored for future enhancement.