Issue link: https://resources.esri.ca/i/1522200
Maxar, Microsoft Figure 16 Freeway Interchange with Above Grade Crossings converging upon a single end point. e left-turning lanes at this intersection add more centrelines in the intersection's square due to the medians separating these turning lanes from the road's main carriageway. In Figure 16, the road segments and their end points intersect freeway carriageways (i.e., where the on and off ramps begin or end at the freeway's interchange). However, no end points are found where ramp segments cross other road or ramp segments at different grades. us, at these locations, road segments that cross are non-in- tersecting points, and editors should not represent them as endpoints. 3.2.4 Access and Exit Ramps Figure 17 illustrates how mapping editors should represent both access and exit ramps onto highways and freeways. Unlike multiple carriageways divided by a median (i.e., a concrete or steel barrier; see Section 3.2.2), the end points for access and exit ramps should be represented with a road segment starting at the farthest point of the lane demarcation, which is located at the beginning of the ramp's exit lane. It does not begin at its physical separation between the ramp lane and the road. e separation from the beginning of the lane separation and before the physical bar- rier is known as the bullnose. When including an access or exit ramp's name, mapping editors should use direc- tional affixes (see Table 7 in Appendix B) along with the following From-To format, which includes these eight elements: Community Road Network Guide to Best Practices v4.0 11