Simple engines cover only public transport data for a single mode, others are multimodal, covering public transport data for several modes advanced intermodal engines may also include road and footpath routing to cover the access legs to reach the public transport stops and also simultaneously compute routes for travel by private car so that the user may make a comparison between public and private modes. The journey planning engine may be either local or remote and may have either a monolithic (all the data in a single search space) or a distributed architecture (the data for different regions split among different engines, each with their own search space). The user interface may run on a terminal, PC, tablet, mobile device or even be speech based and may integrate maps and location data to give a visualization of the trip or to simplify the interaction with the user. Journey planners, also known as trip planners, comprise a front end user interface to gather travel requirements from the user and present the proposed travel itineraries back to them, and a back end journey planning engine which performs the actual computation of the possible trip plans, prioritizing these according to the user's optimization criteria ( fastest, fewest changes, cheapest, etc.) and returning a subset that best satisfy them.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |