I am in need of importing custom roads into Google Maps, (ie: new roads that may not yet be visible in Google Maps) and I would like them to be included in the Directions Service API. The approach I was thinking about first, was to use Google Maps Engine to import a shapefile containing the road data of what I need and create a map based on that. Then I would use the Directions Service on the data in that Custom Map. I am very wary as to if this will work, and as far as I can tell there isn't a trial version of Google Maps Engine that I can use to test this out. And I really don't want to purchase it if it isn't going to work anyway.
Does anyone know if this way will work, or if there is a similar service that Google provides that will work for what I require?
I assume I will need to implement my own directions service if I want to do this, but I want to see if there already is a service out there that will instead.
Thanks!
EDIT: To try and clarify: I want to import a set of custom roads obtained by an alternate source. These roads are in a shapefile format and are more up-to-date than some of the roads on Google. What my goal is, is to use the existing google roads, and "merge" the data that I have where necessary. Say in the far north of Alberta Canada a company has put some roads in for getting to their oil site. I want to import those roads and be able to tell our drivers how to get there. They would take a main highway that google already has, and then turn onto a road that doesn't show up on google because it is too new. This is where the alternate data set of roads would come in.
I want to find the best way to do this, while obtaining directions that incorporate those new roads. I understand that this may not be possible using google services, but I am asking in case someone else has come across this problem.