Practical example: When taking an IC train from Mannheim (blue marker in the map below) to Mainz (green marker), depending on the exact time of travel, the final destinations of these trains (red/orange markers) are Düsseldorf, Greifswald, Hamburg-Altona, Magdeburg, Münster, Dortmund, Cologne, and Mainz itself. While many of these are at least roughly on route when extrapolating the path from Mannheim to Mainz, it is, for instance, geographically rather counterintuitive to travel toward Magdeburg or Greifswald (orange markers) when one wants to go to Mainz:
Practical example: When taking an IC train from Mannheim (blue marker in the map below) to Mainz (green marker), depending on the exact time of travel, the final destinations of these trains (red markers) are Düsseldorf, Greifswald, Hamburg-Altona, Magdeburg, Münster, Dortmund, Cologne, and Mainz itself. While many of these are at least roughly on route when extrapolating the path from Mannheim to Mainz, it is, for instance, geographically rather counterintuitive to travel toward Magdeburg or Greifswald when one wants to go to Mainz:
Practical example: When taking an IC train from Mannheim (blue marker in the map below) to Mainz (green marker), depending on the exact time of travel, the final destinations of these trains (red/orange markers) are Düsseldorf, Greifswald, Hamburg-Altona, Magdeburg, Münster, Dortmund, Cologne, and Mainz itself. While many of these are at least roughly on route when extrapolating the path from Mannheim to Mainz, it is, for instance, geographically rather counterintuitive to travel toward Magdeburg or Greifswald (orange markers) when one wants to go to Mainz: