Guide for Identifying, Classifying, Evaluating, and Mitigating Truck Freight Bottlenecks (2017) / Chapter Skim
Currently Skimming:
Pages 9-19
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 9... ...
9 C h a p t e r 1 This Guidebook provides state-of-the-practice information to transportation professionals on identifying, classifying, evaluating, and mitigating truck bottlenecks. The bottleneck analysis described in this Guidebook is focused on utilizing truck probe data rather than traditional travel demand models.
|
From page 10... ...
10 Guide for Identifying, Classifying, evaluating, and Mitigating truck Freight Bottlenecks used interchangeably or other nomenclature issues that could be remedied with a uniform classification structure (as introduced in Chapter 2)
|
From page 11... ...
Introduction 11 corridor or an analysis can be considered for a corridor and its parallel facilities. In this second case, the analysis is much more similar to an analysis that examines the travel time between the initial and termination points of a corridor.
|
From page 12... ...
12 Guide for Identifying, Classifying, evaluating, and Mitigating truck Freight Bottlenecks valuable stakeholder when identifying truck bottleneck locations as well as mitigation strategies. Engaging truck stakeholders is particularly important for first-mile and last-mile connectors, where truck speed data are typically less available.
|
From page 13... ...
Introduction 13 Source: FHWA Office of Operations, Traffic Congestion and Reliability: Trends and Advanced Strategies for Congestion Mitigation, September 2005.
|
From page 14... ...
14 Guide for Identifying, Classifying, evaluating, and Mitigating truck Freight Bottlenecks Impact of Process-Based Bottleneck Bottleneck Type Rerouting Low bridge heights Truck weight restrictions Hazardous materials restrictions Making additional trips Spring thaw load restrictions when no alternate routes Truck size (length) and weight restrictions Truck bans or restrictions Time-of-day restrictions Truck pick-ups and deliveries in off-hours Truckers having to search/wait for loading zones/parking Having to make inefficient movements such as circling a block, because the last-mile facilities (e.g., parking, load zones, terminal gates)
|
From page 15... ...
Introduction 15 The second broad category of truck bottlenecks encompasses operational process-related delay situations in which the attributes of the trucks, or the cargo they carry, result in travel times longer than passenger vehicles traveling from the same origin to the same destination would experience. Low bridge heights, truck size/weight restrictions, terminal queues, and truck bans are a sampling of examples that cause operational process-related delays.
|
From page 16... ...
16 Guide for Identifying, Classifying, evaluating, and Mitigating truck Freight Bottlenecks It is not always possible to obtain data at the spatial and temporal granularity for the specific location(s) of interest.
|
From page 17... ...
Introduction 17 tracking individual vehicles over a distance or use instantaneous vehicle speed measurements. If vendors ever develop data based on true origin-destination traces for individual vehicles, then directly measured travel times will be available.
|
From page 18... ...
18 Guide for Identifying, Classifying, evaluating, and Mitigating truck Freight Bottlenecks 3. Develop corridor-wide travel times first, and then create the corridor distribution from them.
|
From page 19... ...
Introduction 19 Source: Georgia Department of Transportation (GDOT) Freight & Logistics Plan, 2011.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.