1. There is no spot height data for PR1 road at all. Only small numbers of spot height around the beginning of PR1 road are emerged.
2. Route numbering is somewhat problematic. MR2, for example, is split up by PR1 and resulting in offset intersection and consequently, its alignment.
3. Locating starting point of each route and distinguish each one of them with different color/layer would be extremely helpful in aligning accurate alignments. MR3/MR3-1, for instance.