I have built a statewide network from Navteq streets and need to use parametrized attributes to route oversize vehicles. The problem is: often a Navteq feature is very long. There may be several overpasses on a single roadway feature. I need to split the Navteq feature in order to assign a height parameter for each overpass. When I do this and then create the network dataset, I am unable to route across any segment that has been split ... no route is found. Prior to splitting the Navteq features, routes are successfully found. I am using the "Street Data Processing Tools" for Navteq data, toolbox in ArcGIS 10 to create the network dataset.
When I split the Navteq features, I retain the same LINKID (I have duplicate LINKIDs). Not sure if this is an issue or not.
Alan: Thanks for your reply. I agree with all that you said, and in fact we were confident that we did not need to worry about multiple obstructions along a long Navteq link because, as you mentioned, there is no way to leave the segment and the most restrictive overpass would suffice as a height restriction.
The problem is: sometimes an oversize vehicle has as its' destination, a structure midway along a long segment i.e. bridge reconstruction of the third of five bridges; perhaps a crane needs to travel to the site for construction work ... it is not going all the way to the next exit point. So, we are looking for a way to get the OSOW vehicle to the site. Without splitting the segment, we will not be able to do so. I do agree that if we split, we need to account for all other Navteq attributes. Bob