Transit Busses Sharing the Rand Sharing the Data
Wednesday, October 11, 2017
10 a.m. - 11:30 a.m. EDT
CM | 1.50Add to My Log
Determining traffic flows and speeds in urban areas using transit buses
Traffic flow and speed estimates are typically derived from sensors located at fixed locations on the roadway network. It
is infeasible to deploy these sensors on every segment of spatially extensive urban networks, and most road segments
are either unmonitored or monitored very infrequently. To address this lack of spatial coverage of the urban roadway
network, we propose using transit buses equipped with low cost sensors to serve as mobile traffic sensing platforms.
We conducted an empirical study in which we equipped a van with GPS and a pair of LiDAR sensors and collected data
while the van was repeatedly driven on a tour that emulates a bus route. We developed a modification of the moving
observer method to transform the LiDAR and GPS data into estimates of flow rates and used the data from the pair of
LiDAR sensors to estimate traffic speeds. The empirical results indicate the promise of using transit buses to estimate
traffic flows and speeds across large portions of the urban roadway network
An Open Source tool for the Visualization, Analysis and Reporting of Regional and Statewide Transit Networks
Assessing the current "state of health" of individual transit networks is fundamental when planning improvements to a
transportation network. TNAST is compatible with standard spatial and non-spatial data sources such as census,
employment, demographics, title VI, geographic area shape files, park and ride data, and transit network data which are
publically available through US Census Bureau and Oregon Department of Transportation in standard and open formats.
The latest version of the TNAST offers unparalleled features such as GTFS playground, multi-database, and on-map
reports to name a few. The multi-database features allow the users to select quarterly archived databases to track and
compare the evolution of transit networks over time.
Bus lanes best practices for rapid and effective implementation in the Washington, DC region
In the greater Washington, DC region bus transit service is severely challenged by today's traffic conditions. In the urban
core buses often operate at only half of the speed of adjacent vehicular traffic, sometimes as low as three to five miles
per hour during peak periods, resulting in lost productivity for bus operators, declining attractiveness to riders, and
increasing operating costs for the same level of service. We will present the results of the research, case studies, and
international peer interviews that will be used to develop a handbook of multifaceted strategies for bus lanes. This
handbook will ultimately include recommendations specific to each relevant jurisdiction and each type of bus lane. Each
recommendation will include a step-by-step schedule of tasks needed for completion, including needed regulatory
changes for action by regional jurisdictions and their legislative bodies.
Jerry Garrison, Jerry.Garrison@dot.ohio.gov