docs: Add Transit Vis and paper

README.md

@@ -208,6 +208,7 @@ Apps people use when taking transit.
 - [SEPTA Rail OTP Report](https://apps.phor.net/septa/) - An online on-time performance reporing & drill down tool using GTFS.
 - [TNExT](https://github.com/ODOT-PTS/TNExT) - Transit Network Explorer Tool (TNExT) is a web-based software tool developed for the visualization, analysis, and reporting of regional and statewide transit networks in the state of Oregon.
 - [Toronto Transit Explorer](https://github.com/sidewalklabs/totx) - A Java application that visualizes transit, biking and walking accessibility across the city of Toronto. Live version hosted [here](https://totx.sidewalklabs.com/). Uses a modified version of [R5](https://github.com/conveyal/r5) for routing.
+- [Transit Vis](https://github.com/zackAemmer/transit_vis) - A visualization tool to display performance metrics derived from the King County Metro GTFS-RT feed (OneBusAway API). Viewable [here](https://www.transitvis.com/). Used for [this paper](https://link.springer.com/article/10.1007/s12469-022-00291-7).
 - [TransitFlow](https://github.com/transitland/transitland-processing-animation) Animate GTFS data around the world using Processing and Transitland.
 - [TRAVIC Transit Visualization Client](http://tracker.geops.ch/) - Visualizes vehicles moving based on static GTFS data (and sometimes realtime data). Supports over 260 cities.  Github account for geOps organization is [here](https://github.com/geops).
 - [Traze](https://traze.app/) by [Veridict](https://www.veridict.com) - Visualization of public transport vehicles from all over the world. Collaborate with other users to get real-time updates even when it is not available from the agency. Based on a number of sources, including GTFS and GTFS-RT. (Previously known as [Livemap24](https://www.livemap24.com)). 
@@ -476,6 +477,7 @@ On-line courses, blog posts, and reports related to open transit data.
 - [Brakewood and Watkins - "A literature review of the passenger benefits of real-time transit information"](https://www.tandfonline.com/doi/full/10.1080/01441647.2018.1472147?scroll=top&needAccess=true) (2018) - An overview of many different research studies looking at the benefits of real-time transit information.
 - [Gramacki et al. - "gtfs2vec - Learning GTFS Embeddings for comparing Public Transport Offer in Microregions"](2021) - Methology using Uber's H3 spatial index and machine learning to identify areas of "similar" public transit service quality in cities. Source code available [on GitHub](https://github.com/pwr-inf/gtfs2vec).
 - [Higgins et al. - "Calculating place-based transit accessibility: Methods, tools and algorithmic dependence" (2022)](https://doi.org/10.5198/jtlu.2022.2012) - Compares software tools for calculating accessibility by walking and public transit including ArcGIS Pro, Emme, R5R, and OpenTripPlanner.
+- [Aemmer et al. - "Measurement and classification of transit delays using GTFS-RT data"](https://link.springer.com/article/10.1007/s12469-022-00291-7) - Presents a method for extracting transit performance metrics from a General Transit Feed Specification’s Real-Time (GTFS-RT) component and aggregating them to roadway segments. Used with [Transit Vis](https://github.com/zackAemmer/transit_vis), viewable [here](https://www.transitvis.com/).
 
 #### Government reports
 - [APTA Policy Development and Research - Public Transportation Embracing Open Data](http://www.apta.com/resources/reportsandpublications/Documents/APTA-Embracing-Open-Data.pdf) - APTA's discussion of the benefits and challenges of open transit data (a short summary of the below TCRP report).