What is Guided Navigation? (+Download UserGuide)
Posted: Fri Dec 16, 2016 11:27 am
Hi there,
Who needs Guided Navigation?
In contrary to standard connected navigation systems, that can transfer destinations to the navigation, guided navigation makes it possible to transfer tours as exact as possible from a server based or desktop-based system to the PTV Navigator,
transferring information about the trace the route should follow together with destinations.
For this propose the transferred tour contains intelligent via-points (MVP=magnetic via points), that are different from normal stop-off-points. Normal stop-off-points have to be visited. They can’t be passed by and left out,
without visiting them.
Magnetic-via-points only influence the tour, but do not set up stop-off-points, that have to be visited, so they may be left out on the tour. Tours including magnetic via points in navigation normally are wanted to be used in the way, that the system aims to lead back as quick as possible to the defined tour, if a driver gets off the route. The driver does not see any difference in UI, if MVPs are used; just the route follows a trace that is similar to the defined one. Best results will be received using as similar as possible maps and routingparameters on server and navigator side, but same maps are not mandatory. The magnetic via points concept is designed to cope with map differences as good as possible.
Offroad Guided Navigation
Up from PTV Navigator 6.5 there is the possibility to use Guided Navigation also in offroad situations. That means, it is possible to define routes that are completely or partly offroad, meaning not connected to the underlying street network. Because the route then is not connected to the street networks, the PTV Navigator restricts himself on showing the route trace, and switching to a moving map application in the offroad part. Parts for MVP-routing and offroad-parts can be mixed. Guided Navigation offroad can also be used to map difficult situations like loops or U-Turns in dead end situations or if routes should be followed, that break legal restrictions in the map materials like closings.
For further info check the latest version of the userguide Guided Navigation which enables you to create a so-called BCR file based on
Best regards
Bernd
- Schema of guided navigation
- Roughly spoken the idea behind guided navigation is to use a very mighty routing engine in a client-server context to determine a track that you'd like to drive. The information is then forwarded to the navigation device which then follows the server route.
- One motivation for this approach is that often such a server based engine gives you access to many more routing options and data as the navigation device itself is able to handle (e.g. due to local engines limited disk space or processor power).
For example we've been asked whether we can ensure that a route does not leave the customs zone of the European Community (especially after Brexit). The routing server allows a client to specify a positive/negative list of countries where a route is supposed not to leave the EU. - Second example: tour optimization! Sometimes you need to calculate the later workload of trucks in the context of a fleet optimization which performs high level tasks such as tour optimization or sequencing. This requires a perspective from a meta level which is often available for a dispatcher but not for the driver himself.
- A third reason is that you might want to prevent the mobile engine from calculating because you'd like to obscure a track. This is often the case in the security transport context where a driver get's directions from the back-office. By applying this approach the driver can't predict the trip simply based on the next stop's location: his colleagues in the office design a route that is not "the usual" one.
In contrary to standard connected navigation systems, that can transfer destinations to the navigation, guided navigation makes it possible to transfer tours as exact as possible from a server based or desktop-based system to the PTV Navigator,
transferring information about the trace the route should follow together with destinations.
For this propose the transferred tour contains intelligent via-points (MVP=magnetic via points), that are different from normal stop-off-points. Normal stop-off-points have to be visited. They can’t be passed by and left out,
without visiting them.
Magnetic-via-points only influence the tour, but do not set up stop-off-points, that have to be visited, so they may be left out on the tour. Tours including magnetic via points in navigation normally are wanted to be used in the way, that the system aims to lead back as quick as possible to the defined tour, if a driver gets off the route. The driver does not see any difference in UI, if MVPs are used; just the route follows a trace that is similar to the defined one. Best results will be received using as similar as possible maps and routingparameters on server and navigator side, but same maps are not mandatory. The magnetic via points concept is designed to cope with map differences as good as possible.
Offroad Guided Navigation
Up from PTV Navigator 6.5 there is the possibility to use Guided Navigation also in offroad situations. That means, it is possible to define routes that are completely or partly offroad, meaning not connected to the underlying street network. Because the route then is not connected to the street networks, the PTV Navigator restricts himself on showing the route trace, and switching to a moving map application in the offroad part. Parts for MVP-routing and offroad-parts can be mixed. Guided Navigation offroad can also be used to map difficult situations like loops or U-Turns in dead end situations or if routes should be followed, that break legal restrictions in the map materials like closings.
For further info check the latest version of the userguide Guided Navigation which enables you to create a so-called BCR file based on
- any programming language / environment
- any routing engine's output
Best regards
Bernd