Content that references this location
Simulation Results Suggest That Connected Automated Vehicle (CAV) Applications That Support Traffic Optimization on Signalized Corridors Can Reduce Vehicle Stops, But Have Limited Impacts on Overall Travel Times and Delay.
METHODOLOGY
An off-the-shelf microscopic simulation tool with advanced programming interface capabilities was selected to support the development and assessment of TOSCo functionality. Performance…
Content type
Date Posted
05/31/2022
Taxonomy (ARC-IT)
Eco-Traffic Signal Timing (ST02),
Eco-Approach and Departure at Signalized Intersections (ST08),
Connected Vehicle Traffic Signal System (TM04)
Geolocation links
Deployment of an Active Traffic Management System with a Dynamic Shoulder Lane in Michigan Reduced Crashes by 17 Percent and Yielded a Benefit-Cost Ratio of Up to 3.01.
Methodology
Changes in average speeds, travel times and various travel time reliability measures along the corridor were quantified using a before-after comparison. Incident clearance and special…
Content type
Date Posted
05/25/2022
Taxonomy (ARC-IT)
Dynamic Lane Management and Shoulder Use (TM22)
Geolocation links
Simulation and Limited Field Tests Showed a 10 Percent Fuel Reduction and 13 Percent Delay Reduction for Connected and Automated Vehicles Using Adaptive Traffic Signal Control.
METHODOLOGY
A microscopic traffic simulation model of Ann Arbor was developed along with an adaptive traffic signal control algorithm to investigate the energy savings and mobility benefits…
Content type
Date Posted
01/31/2022
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Connected Vehicle Traffic Signal System (TM04),
Connected Eco-Driving (ST09),
Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15),
Automated Vehicle Operations (VS16),
En-Route Guidance (TI03)
Geolocation links
Compared to Conventional Trip Sharing Solutions that Spend more than Half of Trips Serving Only a Single Passenger, Models of Trip Sharing Augmented with Autonomous Vehicle Technology Indicate Ridership with Three to Four Travelers can be Maintained.
The introduction of autonomous vehicles to the "commute trip sharing problem" (CTSP) was found to serve, on average, an order of magnitude more trips than conventional vehicles. While implementing…
Content type
Date Posted
02/25/2021
Taxonomy (ARC-IT)
Transit Stop Request (PT15),
Route ID for the Visually Impaired (PT16),
Shared Use Mobility and Dynamic Ridesharing (TI06)
Geolocation links
A simulation of connected-autonomous vehicles operating in Ann Arbor, Michigan demonstrated small increases in VMT (2 percent) coupled with disproportionate increases in energy usage.
Content references source material no longer available at its original location.
The POLARIS framework developed by Argonne National Laboratory (ANL) was used to develop a travel demand model for the Ann Arbor, Michigan area. The model consisted of an activity-based demand model…
Content type
Date Posted
09/21/2017
Taxonomy (ARC-IT)
Autonomous Vehicle Safety Systems (VS01),
Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15),
Automated Vehicle Operations (VS16)
Geolocation links
Performance of transit-specific connected vehicle safety applications in Safety Model Deployment show promise but would benefit from more precise location determination and pedestrian detection technology.
Evaluation Approach:The TRP system was originally deployed onto the three University of Michigan transit vehicles with a full complement of TRP hardware and software on February 1, 2013. The system…
Content type
Date Posted
01/23/2015
Taxonomy (ARC-IT)
Dynamic Roadway Warning (TM12),
Autonomous Vehicle Safety Systems (VS01),
Transit Pedestrian Indication (PT11),
Vulnerable Road User Safety (VS12),
Transit Vehicle at Station/Stop Warnings (PT12),
Vehicle Turning Right in Front of a Transit Vehicle (PT13)
Geolocation links
In Michigan, 8 of 108 volunteers who drove light vehicles equipped with an integrated crash warning system indicated the system prevented them from having a crash.
During the field operational test (FOT), 108 drivers drove 16 FOT vehicles for 40 days, 12 days of baseline period of driving without the integrated safety system activated and 28 days of driving…
Content type
Date Posted
01/31/2013
Geolocation links
In Michigan, 108 volunteers who drove 16 vehicles equipped with crash warning systems indicated the blind-spot detection component of the lane-change/merge crash warning system was the most useful and satisfying aspect of the integrated system.
During the field operational test (FOT), 108 drivers drove 16 FOT vehicles for 40 days, 12 days of baseline period of driving without the integrated safety system activated and 28 days of driving…
Content type
Date Posted
01/31/2013
Geolocation links
Evaluation of several transit signal priority systems found decreased bus travel time variability by 35 percent, lowered bus travel times by 6 to 27 percent, reduced AM peak intersection delay by 13 percent, and decreased signal-related bus stops by
ANN ARBOR, MICHIGANIn 1996, a test was conducted in Ann Arbor, Michigan that investigated bus priority using green extensions, red truncation (with and without compensation), and skip phasing (…
Content type
Date Posted
04/10/2002
Taxonomy (ARC-IT)
Transit Signal Priority (PT09)
A 1998 survey of transit riders in Ann Arbor, Michigan found that police presence and increased lighting had the greatest influence on riders' perception of personal security; emergency phones and video surveillance systems had little influence.
FINDINGSThe camera systems were the safety enhancement most often noticed by respondents. The on-board cameras were noticed by 70 percent of the respondents and the transit center cameras by 63…
Content type
Date Posted
11/03/2000
Taxonomy (ARC-IT)
Transit Security (PT05)
Geolocation links
Provide Drivers with Messages for Lane Drop Points Further Upstream of the Merging Point when Implementing Part-Time Use of the Inside Shoulder.
Terminate the Flex lane into a deceleration lane or at a system interchange to optimize performance, safety, and perceptions. This study provided ample evidence that corridors ending with a lane…
Content type
Date Posted
05/25/2022
Taxonomy (ARC-IT)
Dynamic Lane Management and Shoulder Use (TM22)
Geolocation links
Autonomous delivery operator finds state regulated bike lane and roadway regulations easier to manage than sidewalk regulations that vary by municipality.
Market factors that are attractive to deployers:
College students who are quick adopters of new technology
Density of restaurants
States with roust AV and e-bike regulation.
Why Refraction AI…
Content type
Date Posted
04/10/2020
Geolocation links
Organizations embarking on driverless shuttle deployments should set specific project goals, identify operating environment requirements, engage with stakeholders and regulators and establish data needs early for project success.
Mcity shared the following lessons learned to help other organizations who may be considering launching driverless shuttle services.
Set Specific Project Goals. The Mcity Driverless Shuttle was…
Content type
Date Posted
02/13/2019
Geolocation links
Specify and implement high accuracy vehicle location and pedestrian detection technology for connected vehicle transit safety applications.
Conclusions and lessons learned from this project are as follows:
The TRP on-bus software was effective at providing alerts to transit drivers.
The transit drivers expressed acceptance of the TRP…
Content type
Date Posted
01/23/2015
Taxonomy (ARC-IT)
Transit Vehicle at Station/Stop Warnings (PT12),
Vehicle Turning Right in Front of a Transit Vehicle (PT13),
Autonomous Vehicle Safety Systems (VS01),
V2V Basic Safety (VS02),
Transit Pedestrian Indication (PT11),
Dynamic Roadway Warning (TM12),
Vulnerable Road User Safety (VS12)
Geolocation links
Install Automatic Vehicle Location (AVL) technology to greatly enhance transit agency performance.
Installation and use of Automatic Vehicle Location (AVL) technology can greatly enhance transit agency performance. Operations and emergency response are enhanced, operational data can be captured to…
Content type
Date Posted
09/16/2005
The Total Capital Costs of a Dynamic Shoulder System on US-23 near Ann Arbor are Estimated at $60 Million.
Active traffic management (ATM) aims to dynamically manage recurrent and non-recurrent congestion based on prevailing and predicted traffic conditions. Researchers analyzed the effectiveness of the…
Content type
Made Public Date
07/29/2022
Taxonomy (ARC-IT)
Dynamic Lane Management and Shoulder Use (TM22)
Geolocation links
An autonomous vehicle delivery robot can deliver a package for 80 percent less cost than a human.
This article referenced cost data from an autonomous robot delivery operator in Ann Arbor, Michigan.
Cost of delivery using a robot: $2.00 to $2.50 per package
Cost of delivery using a human: $11…
Content type
Made Public Date
04/13/2020
Taxonomy (ARC-IT)
Carrier Operations and Fleet Management (CVO01),
Freight-Specific Dynamic Travel Planning (CVO09),
Railroad Operations Coordination (TM15),
Drawbridge Management (TM18)
Geolocation links
The cost to implement an advanced public transportation systems in Ann Arbor, Michigan was $32,500 per bus.
In 1997, the Ann Arbor Transportation Authority, in Ann Arbor, Michigan, implemented an advanced public transportation system for its fixed route and paratransit bus operations. The system integrated…
Content type
Made Public Date
11/07/2003
Taxonomy (ARC-IT)
Transit Vehicle Tracking (PT01),
Dynamic Transit Operations (PT03),
Transit Security (PT05),
Transit Fleet Management (PT06),
Transit Traveler Information (PT08),
Transit Pedestrian Indication (PT11),
Transit Vehicle at Station/Stop Warnings (PT12)
Geolocation links
INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE
1200 New Jersey Avenue, SE
Washington, DC 20590
