Guidelines for Implementing Managed Lanes (2016) / Chapter Skim
Currently Skimming:
Pages 128-149
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 128... ...
128 Term Definition Source Acceleration Increase in velocity per unit time; in transit, usually measured in feet per second squared (meters per second squared) or, in the United States, sometimes in miles per hour per second.
|
From page 129... ...
129 Alternative fuels Alternatives to conventional diesel fuel for urban transit buses, intended to reduce pollution. Includes methanol, propane, CNG (compressed natural gas)
|
From page 130... ...
130 Base period (off-peak period) In transit, the time of day during which vehicle requirements and schedules are not influenced by peak-period passenger volume demands (e.g., between morning and afternoon peak periods)
|
From page 131... ...
131 Bus, double-decker A high-capacity bus that has two levels of seating, one over the other, connected by one or two stairways. Total bus height is usually 13–14.5 ft (4.0–4.4 m)
|
From page 132... ...
132 Bus rapid transit (BRT) A bus operation that is generally characterized by operation on a separate right-of-way that permits high speeds.
|
From page 133... ...
133 Channelizer (also called pylon or delineator)
|
From page 134... ...
134 Continuous access (also called open access) A managed lane that allows access anywhere along its length, typically separated from the general-purpose lanes of traffic by a painted stripe.
|
From page 135... ...
135 Dynamic shoulder lanes A strategy that enables the use of the shoulder as a travel lane -- known as hard shoulder running or temporary shoulder use -- based on congestion levels during peak periods and in response to incidents or other conditions as warranted during non-peak periods. In contrast to a static time-of-day schedule for using a shoulder lane, an active traffic and demand management approach continuously monitors conditions and uses real-time and anticipated congestion levels to determine the need for using a shoulder lane as a regular or special-purpose travel lane (e.g., transit only)
|
From page 136... ...
136 Express lanes Lanes that restrict access (e.g., I-94 Dan Ryan in Chicago) or, according to the MUTCD definition, a managed lane that employs electronic tolling in a freeway right-of-way with or without access restrictions.
|
From page 137... ...
137 Grade separation A vertical separation of intersecting facilities (road, rail, etc.) by the provision of bridge structures.
|
From page 138... ...
138 Integrated corridor management The operational coordination of multiple transportation networks and cross-network connections comprising a corridor and the institutional coordination of those agencies and entities responsible for corridor mobility. Gonzalez et al.
|
From page 139... ...
139 Lane, carpool A highway or street lane intended primarily for carpools, vanpools, and other high-occupancy vehicles, including buses, either all day or during specified periods. May be used by other traffic under certain circumstances, such as while making a right turn.
|
From page 140... ...
140 Limited access Access management used to restrict entry to a facility based on facility congestion levels or operational condition, such as the presence of a crash or maintenance activities. Typically, access is not restricted by type of user.
|
From page 141... ...
141 Model 1. A mathematical or conceptual presentation of relationships and actions within a system.
|
From page 142... ...
142 Open-road tolling A system designed to allow ETC from vehicles traveling at normal highway speeds. Might be used on toll roads or toll facilities in conjunction with toll plazas.
|
From page 143... ...
143 Peak period Period in which traffic levels rise from normal levels to maximum levels.
|
From page 144... ...
144 Quality of service The overall measured or perceived quality of transportation service from the user's or passenger's point of view, rather than from the operating agency's point of view. Defined for transit systems, route segments, and stops by level of service.
|
From page 145... ...
145 Right shoulder Pavement located on the right side of the managed lane travelway or general-purpose mainlanes used for enforcement and emergency stopping. Research Team Road pricing An umbrella phrase that covers all charges imposed on those who use roadways.
|
From page 146... ...
146 Speed, overall trip (effective operating speed, cycle speed) In transit operations, the average speed achieved per round trip, including layover and recovery time but excluding deadheading time.
|
From page 147... ...
147 Toll lane or road A section of road where motorists are charged a usage fee that is usually collected at a specific point for a given lane or section of road. Adapted from Kuhn et al.
|
From page 148... ...
148 Travel time The length of time it takes to travel between two points.
|
From page 149... ...
149 Vehicle-to- infrastructure communications A system designed to transmit information between vehicles and the road infrastructure to enable a variety of safety, mobility, and environmental applications.
|
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.