C# API that find a list of highway exits en route from A to B

Given two map coordinates A and B, return a list of all highway exits on the way from A to B OpenStreetMap should be used to find route and to find highway exits. For example, OSRM viaroute API (e.g. [login to view URL] or similar)) can used to find directions. Overpass API (such as [login to view URL] or similar) can be used to find highway exits. The solution should be implemented as C# library. Here's API signature: public class Junction { // name of the highway on which there's a junction public string HighwayName{get;set;} //exit_to from Overpass API - where exit leads. Either exit_to is populated or both exit_to:left and exit_to:right are populated public string ExitTo{get;set;} //exit_to:left from Overpass API - where exit leads after left turn public string ExitToLeft{get;set;} public string ExitToRight{get;set;} public long OSMID{get;set;} public double Lat{get;set;} public double Long{get;set;}} public IEnumerable<Junction> GetHighwayJunctions(double latStart, double longStart, double latEnd, double longEnd) { … } Important: Before proceeding to implement the solution please check back explaining the details regarding what OSM service you are planning to use for routing and to find highway exits and examples of input/output.