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TAC Research Bulletin

The TAC Research Bulletin highlights recently-published reports and articles from around the world with relevance to road transportation in Canada. Full text links are included, so you get more than just the abstract.

E.g., 02/19/2017
E.g., 02/19/2017
Thursday, November 10, 2016 - 19:30
Advances in vehicle automation and communication can dramatically reduce the economic and comprehensive costs of U.S. crashes. This report quantifies in detail the crash-related gains of various vehicle automation and connectivity features and anticipates their near-term and long-range impacts on car crashes in Texas. It also documents the best practices for...
Thursday, November 10, 2016 - 19:30
For highways located in different counties and cities across the country, specific conditions of weather, terrain, traffic characteristics, highway conditions, population and economic development are all different. Driving environments, traffic accidents and injury risks have strong interactions, which have not been fully explored. To effectively mitigate...
Thursday, November 10, 2016 - 19:30
This Austroads report describes a two-year study designed to quantify the immediate and longer-term maintenance impact of grader blading and surface re-sheeting on unsealed roads. The project assembled and analysed roughness data collected by Cassowary Coast Regional Council in Queensland, Blayney Shire Council in New South Wales and Moorabool Shire...
Monday, September 19, 2016 - 16:30
This Strategic Agenda will inform the Federal Highway Administration's (FHWA) pedestrian and bicycle activities in the next 3 to 5 years and is being organized around four goals: (1) Networks, (2) Safety, (3) Equity, and (4) Trips. Each goal includes actions relating to (a) Capacity Building, (b) Policy, (c) Data, and (d) Research. The Strategic Agenda will...
Thursday, September 1, 2016 - 14:45
Roadside drainage ditches (roadside grassed swales) typically receive runoff directly from the road and water is infiltrated over the side slope of the ditch, similar to a filter strip. Water that runs off the side slopes then has a further opportunity to infiltrate as it flows down the center of the ditch. This research focuses on the volume reduction...
Tuesday, August 30, 2016 - 15:30
This  publication  is  a  resource  for  practitioners  seeking  to  build  multimodal  transportation  networks.  The  publication  highlights ways that planners and designers can apply the design flexibility found in current [US] national design guidance to address common roadway...
Tuesday, August 30, 2016 - 15:15
This document is intended as a guide for use by Metropolitan Planning Organizations (MPO) and other planning agencies that are interested in applying Dynamic Traffic Assignment (DTA) models for planning applications. The objective of this document is to provide guidance on key practical aspects of working with DTA models, namely, information about model...
Tuesday, August 30, 2016 - 15:15
In order to better understand the curling and warping behavior of Portland cement concrete (PCC) pavements in Iowa and provide recommendations to mitigate curling and warping deflections, field investigations were performed at six existing sites during the late fall of 2015. These sites included PCC pavements with various ages, slab shapes, mix design aspects,...
Tuesday, August 16, 2016 - 18:45
Connecticut DOT trialed Uniform Compaction (UC) equipment on 2 pilot projects during the 2014 construction season. This equipment included everything that would be used for Intelligent Compaction (IC) with the exception of the stiffness measurement instrumentation. The intention was to investigate whether the use of the equipment would lead to better coverage...
Tuesday, August 16, 2016 - 18:45
In a joint study between Minnesota DOT and the University of Minnesota, the field performance and mechanical properties of asphalt mixtures from pavement sections treated with a number of new products, called bio sealants, is investigated. The objective of the study is to obtain relevant properties of treated asphalt materials to understand the mechanism by...
Tuesday, August 16, 2016 - 18:45
MRIGlobal developed an automated system to measure and display the distance between two instrumented vehicles traveling along a road. The system uses GPS modules and radio modems to send location information between the vehicles five times per second. A field software was developed to calculate the distance between the vehicles based on this GPS data in real...
Wednesday, August 3, 2016 - 15:15
This synthesis from Transportation Research Board documents the state-of-the-practice on how the transportation community is protecting roadways and mitigating damage from inundation and overtopping. This report highlights major issues and design components specific to roadway embankment damage from flooding. It documents the mechanics of damage to the...

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