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A Behavior-Based Framework for Assessing Barrier Effects to Wildlife from Vehicle Traffic Volume 1 Sandra L
CONCEPTS & THEORY A behavior-based framework for assessing barrier effects to wildlife from vehicle traffic volume 1 Sandra L. Jacobson,1,† Leslie L. Bliss-Ketchum,2 Catherine E. de Rivera,2 and Winston P. Smith3,4 1 1USDA Forest Service, Pacific Southwest Research Station, Davis, California 95618 USA 1 2Department of Environmental Science & Management, School of the Environment, 1 Portland State University, Portland, Oregon 97207-0751 USA 1 3USDA Forest Service, Pacific Northwest Research Station, La Grande, Oregon 97850 USA 1 Citation: Jacobson, S. L., L. L. Bliss-Ketchum, C. E. de Rivera, and W. P. Smith. 2016. A behavior-based framework for assessing barrier effects to wildlife from vehicle traffic volume. Ecosphere 7(4):e01345. 10.1002/ecs2.1345 Abstract. Roads, while central to the function of human society, create barriers to animal movement through collisions and habitat fragmentation. Barriers to animal movement affect the evolution and tra- jectory of populations. Investigators have attempted to use traffic volume, the number of vehicles passing a point on a road segment, to predict effects to wildlife populations approximately linearly and along taxonomic lines; however, taxonomic groupings cannot provide sound predictions because closely related species often respond differently. We assess the role of wildlife behavioral responses to traffic volume as a tool to predict barrier effects from vehicle-caused mortality and avoidance, to provide an early warning system that recognizes traffic volume as a trigger for mitigation, and to better interpret roadkill data. We propose four categories of behavioral response based on the perceived danger to traffic: Nonresponders, Pausers, Speeders, and Avoiders. -
Roundabout Planning, Design, and Operations Manual
Roundabout Planning, Design, and Operations Manual December 2015 Alabama Department of Transportation ROUNDABOUT PLANNING, DESIGN, AND OPERATIONS MANUAL December 2015 Prepared by: The University Transportation Center for of Alabama Steven L. Jones, Ph.D. Abdulai Abdul Majeed Steering Committee Tim Barnett, P.E., ALDOT Office of Safety Operations Stuart Manson, P.E., ALDOT Office of Safety Operations Sonya Baker, ALDOT Office of Safety Operations Stacey Glass, P.E., ALDOT Maintenance Stan Biddick, ALDOT Design Bryan Fair, ALDOT Planning Steve Walker, P.E., ALDOT R.O.W. Vince Calametti, P.E., ALDOT 9th Division James Brown, P.E., ALDOT 2nd Division James Foster, P.E., Mobile County Clint Andrews, Federal Highway Administration Blair Perry, P.E., Gresham Smith & Partners Howard McCulloch, P.E., NE Roundabouts DISCLAIMER This manual provides guidelines and recommended practices for planning and designing roundabouts in the State of Alabama. This manual cannot address or anticipate all possible field conditions that will affect a roundabout design. It remains the ultimate responsibility of the design engineer to ensure that a design is appropriate for prevailing traffic and field conditions. TABLE OF CONTENTS 1. Introduction 1.1. Purpose ...................................................................................................... 1-5 1.2. Scope and Organization ............................................................................... 1-7 1.3. Limitations ................................................................................................... -
Preferential and Managed Lane Signs and General Information Signs
2009 Edition Page 253 CHAPTER 2G. PREFERENTIAL AND MANAGED LANE SIGNS Section 2G.01 Scope Support: 01 Preferential lanes are lanes designated for special traffic uses such as high-occupancy vehicles (HOVs), light rail, buses, taxis, or bicycles. Preferential lane treatments might be as simple as restricting a turning lane to a certain class of vehicles during peak periods, or as sophisticated as providing a separate roadway system within a highway corridor for certain vehicles. 02 Preferential lanes might be barrier-separated (on a separate alignment or physically separated from the other travel lanes by a barrier or median), buffer-separated (separated from the adjacent general-purpose lanes only by a narrow buffer area created with longitudinal pavement markings), or contiguous (separated from the adjacent general-purpose lanes only by a lane line). Preferential lanes might allow continuous access with the adjacent general-purpose lanes or restrict access only to designated locations. Preferential lanes might be operated in a constant direction or operated as reversible lanes. Some reversible preferential lanes on a divided highway might be operated counter-flow to the direction of traffic on the immediately adjacent general-purpose lanes. 03 Preferential lanes might be operated on a 24-hour basis, for extended periods of the day, during peak travel periods only, during special events, or during other activities. 04 Open-road tolling lanes and toll plaza lanes that segregate traffic based on payment method are not considered preferential lanes. Chapter 2F contains information regarding signing of open-road tolling lanes and toll plaza lanes. 05 Managed lanes typically restrict access with the adjacent general-purpose lanes to designated locations only. -
Module 6. Hov Treatments
Manual TABLE OF CONTENTS Module 6. TABLE OF CONTENTS MODULE 6. HOV TREATMENTS TABLE OF CONTENTS 6.1 INTRODUCTION ............................................ 6-5 TREATMENTS ..................................................... 6-6 MODULE OBJECTIVES ............................................. 6-6 MODULE SCOPE ................................................... 6-7 6.2 DESIGN PROCESS .......................................... 6-7 IDENTIFY PROBLEMS/NEEDS ....................................... 6-7 IDENTIFICATION OF PARTNERS .................................... 6-8 CONSENSUS BUILDING ........................................... 6-10 ESTABLISH GOALS AND OBJECTIVES ............................... 6-10 ESTABLISH PERFORMANCE CRITERIA / MOES ....................... 6-10 DEFINE FUNCTIONAL REQUIREMENTS ............................. 6-11 IDENTIFY AND SCREEN TECHNOLOGY ............................. 6-11 System Planning ................................................. 6-13 IMPLEMENTATION ............................................... 6-15 EVALUATION .................................................... 6-16 6.3 TECHNIQUES AND TECHNOLOGIES .................. 6-18 HOV FACILITIES ................................................. 6-18 Operational Considerations ......................................... 6-18 HOV Roadway Operations ...................................... 6-20 Operating Efficiency .......................................... 6-20 Considerations for 2+ Versus 3+ Occupancy Requirement ............. 6-20 Hours of Operations .......................................... -
What Is the Difference Between an Arterial Street and a Non-Arterial (Local) Street?
WHAT IS THE DIFFERENCE BETWEEN AN ARTERIAL STREET AND A NON-ARTERIAL (LOCAL) STREET? Federal and State guidelines require that streets be classified based on function. Generally, streets are classified as either arterial streets or non-arterial streets. Cities can also use the designations to guide the nature of improvements on certain roadways, such as sidewalks or street calming devices. The primary function of arterials is to provide a high degree of vehicular mobility through effective street design and by limiting property access. The vehicles on arterials are often through traffic. Generally, the higher the classification of a street (Principal Arterial) being the highest), the greater the volumes, through movements, length of trips and the fewer the access points. Arterials in Shoreline are further divided into the three classes and are described as follows: • Principal Arterials have higher levels of local land access controls, with limited driveway access, and regional significance as major vehicular travel routes that connect between cities within a metropolitan area. Examples: Aurora Avenue N, NE 175th Street and 15th Avenue NE • Minor Arterials are generally designed to provide a high degree of intra-community connections and are less significant from a perspective of a regional mobility. Examples: Meridian Avenue N,N/ NE 185th Street and NW Richmond Beach Road • Collector Arterials assemble traffic from the interior of an area/community and deliver it to the closest Minor or Principal Arterials. Collector Arterials provide for both mobility and access to property and are designed to fulfill both functions. Examples: Greenwood Avenue N, Fremont Avenue N and NW Innis Arden Way. -
American Title a Sociation ~ ~
OFFICIAL PUBLICATION AMERICAN TITLE A SOCIATION ~ ~ VOUJME XXXVI JUNE, 1957 NUMBER 6 TITLE NEWS Official Publication of THE AMERICAN TITLE ASSOCIATION 3608 Guardian Building-Detroit 26, Michigan Volume XXXVI June, 1957 Number 6 Table of Contents Introduction-The Federal Highway Program ......... ... ................ .. .................... 2 J. E. Sheridan Highway Laws Relating to Controlled Access Roads ..... .. ....... ........... 6 Norman A. Erbe Title Companies and the Expanded Right of Way Problems ...... ............. .. 39 , Daniel W. Rosencrans Arthur A. Anderson Samuel J. Some William A . Thuma INTRODUCTION The Federal Highway Program J. E. SHERIDAN We are extremely grateful to Nor veloped its planning sufficiently to man A. Erbe, Attorney General of the show to the satisfaction of the dis State of Iowa, for permission to re trict engineer the effect of the pro print his splendid brief embracing posed construction upon adjace.nt the highway laws of various states property, the treatment of access con relating to the control in access roads. trol in the area of Federal acquisi Mr. Erbe originally presented this m tion, and that appropriate arrange narrative form before the convention ments have been made for mainte of the Iowa Title Association in May nance and supervision over the land of this year. As is readily ascertain to be acquired and held in the name able, this is the result of a compre of the United States pending transfer hensive study of various laws touch· of title and jurisdiction to the State ing on the incidents of highway regu or the proper subdivision thereof." lations. Additionally, we are privi It is suggested that our members leged to carry the panel discussion bring this quoted portion to the at of the American Right of Way Asso tention of officers of the Highway ciation Convention held in Chicago, Department and the office of its legal May 16 and 17, dealing with "Title division, plus the Office of the Attor Companies and the Expanded Right ney General within the members' ju of Way Problems". -
Traffic Control Strategies for Congested Freeways and Work Zones
Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA/TX-08/0-5326-2 4. Title and Subtitle 5. Report Date TRAFFIC CONTROL STRATEGIES FOR CONGESTED FREEWAYS November 2007 AND WORK ZONES Published: October 2008 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Geza Pesti, Poonam Wiles, Ruey Long (Kelvin) Cheu, Praprut Songchitruksa, Report 0-5326-2 Jeff Shelton, and Scott Cooner 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Texas Transportation Institute The Texas A&M University System 11. Contract or Grant No. College Station, Texas 77843-3135 Project 0-5326 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Texas Department of Transportation Technical Report: Research and Technology Implementation Office September 2005-August 2007 P. O. Box 5080 14. Sponsoring Agency Code Austin, Texas 78763-5080 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Improved Techniques for Traffic Control for Freeways and Work Zones URL: http://tti.tamu.edu/documents/0-5326-2.pdf 16. Abstract The primary objective of the research was to identify and evaluate effective ways of improving traffic operations and safety on congested freeways. There was particular interest in finding condition-responsive traffic control solutions for the following problem areas: (1) end-of-queue warning, (2) work zones with lane closure, and (3) queue spillover at exit ramps. Available techniques considered by this research include combination of static and dynamic queue warning systems, dynamic merge control in advance of freeway lane closures, and various traffic control strategies, such as traffic diversion and ramp metering, to mitigate queue spillover at exit ramps. -
Impact of Highway Capacity and Induced Travel on Passenger Vehicle Use and Greenhouse Gas Emissions
Impact of Highway Capacity and Induced Travel on Passenger Vehicle Use and Greenhouse Gas Emissions Policy Brief Susan Handy, University of California, Davis Marlon G. Boarnet, University of Southern California September 30, 2014 Policy Brief: http://www.arb.ca.gov/cc/sb375/policies/hwycapacity/highway_capacity_brief.pdf Technical Background Document: http://www.arb.ca.gov/cc/sb375/policies/hwycapacity/highway_capacity_bkgd.pdf 9/30/2014 Policy Brief on the Impact of Highway Capacity and Induced Travel on Passenger Vehicle Use and Greenhouse Gas Emissions Susan Handy, University of California, Davis Marlon G. Boarnet, University of Southern California Policy Description Because stop-and-go traffic reduces fuel efficiency and increases greenhouse gas (GHG) emissions, strategies to reduce traffic congestion are sometimes proposed as effective ways to also reduce GHG emissions. Although transportation system management (TSM) strategies are one approach to alleviating traffic congestion,1 traffic congestion has traditionally been addressed through the expansion of roadway vehicle capacity, defined as the maximum possible number of vehicles passing a point on the roadway per hour. Capacity expansion can take the form of the construction of entirely new roadways, the addition of lanes to existing roadways, or the upgrade of existing highways to controlled-access freeways. One concern with this strategy is that the additional capacity may lead to additional vehicle travel. The basic economic principles of supply and demand explain this phenomenon: adding capacity decreases travel time, in effect lowering the “price” of driving; when prices go down, the quantity of driving goes up (Noland and Lem, 2002). An increase in vehicle miles traveled (VMT) attributable to increases in capacity is called “induced travel.” Any induced travel that occurs reduces the effectiveness of capacity expansion as a strategy for alleviating traffic congestion and offsets any reductions in GHG emissions that would result from reduced congestion. -
"2. Sidewalks". "Boston Complete Streets Design Guide."
Sidewalk Zone Widths The width of the sidewalk contributes to the degree of When making decisions for how to allocate sidewalk space, comfort and enjoyment of walking along a street. Narrow the following principles should be used: sidewalks do not support lively pedestrian activity, and may create dangerous conditions where people walk in the Frontage Zone street. Typically, a five foot wide Pedestrian Zone supports > The Frontage Zone should be maximized to provide space two people walking side by side or two wheel chairs passing for cafés, plazas, and greenscape elements along build- each other. An eight foot wide Pedestrian Zone allows two ing facades wherever possible, but not at the expense of pairs of people to comfortably pass each other, and a ten reducing the Pedestrian Zone beyond the recommended foot or wider Pedestrian Zone can support high volumes of minimum widths. pedestrians. Pedestrian Zone Vibrant sidewalks bustling with pedestrian activity are not > The Pedestrian Zone should be clear of any obstructions only used for transportation, but for social walking, lingering, including utilities, traffic control devices, trees, and furniture. and people watching. Sidewalks, especially along Downtown When reconstructing sidewalks and relocating utilities, all Commercial, Downtown Mixed-Use, and Neighborhood Main utility access points and obstructions should be relocated Streets, should encourage social uses of the sidewalk realm outside of the Pedestrian Zone. by providing adequate widths. > While sidewalks do not need to be perfectly straight, the SIDEWALKS Pedestrian Zone should not weave back and forth in the When determining sidewalk zone widths, factors to consider right-of-way for no other reason than to introduce curves. -
Access Management Manual, September 5, 2019 TABLE of CONTENTS
AccessAccess ManagementManagement ManualManual T E X A S Prepared by the City of Irving Public Works/Traffic and Transportation Department Adopted September 5, 2019 Access Management Manual, September 5, 2019 TABLE OF CONTENTS Section 1 Introduction Page 1.0 Purpose 1 1.1 Scope 1 1.2 Definitions 3 1.3 Authority 10 Section 2 Principles of Access Management 2.1 Relationship between Access and Mobility 11 2.2 Integration of Land Use and Transportation 11 2.3 Relationship between Access and Roadway Efficiency 12 2.4 Relationship between Access and Traffic Safety 12 Section 3 Access Management Programs and Policies 3.1 Identifying Functional Hierarchy of Roadways 14 3.1.1 Sub-Classifications of Roadways 14 3.1.1.1 Revising the “Master Thoroughfare Plan” 15 3.1.2 Comprehensive Plan 15 3.1.3 Discretionary Treatment by the Director 15 3.2 Land Use 15 3.3 Unified Access Planning Policy 16 3.4 Granting Access 16 3.4.1 General Mutual Access 17 3.4.2 Expiration of Access Permission 17 3.4.3 “Grandfathered” Access and Non-Conforming Access 17 3.4.4 Illegal Access 19 3.4.4.1 Stealth Connection 19 3.4.5 Temporary Access 19 3.4.6 Emergency Access 19 3.4.7 Abandoned Access 20 3.4.8 Field Access 20 3.4.9 Provision for Special Case Access 20 3.4.10 Appeals, Variances and Administrative Remedies 20 3.5 Parking and Access Policy 20 3.6 Access vs Accessibility 21 3.7 Precedence of Access Rights Policy 21 3.8 Right to Access A Specific Roadway 22 3.9 Traffic Impact Analyses (TIA’s) 22 3.9.1 Level of Service (LOS) 22 3.9.2 Traffic Impact Analysis (TIA) Requirements -
Petition For/Request to Initiate Vacation of Public Highway, Street, Alley Or Easement Requirements and Process Overview
Petition for/request to initiate vacation of public highway, street, alley or easement Requirements and process overview The City of St. Louis Park will vacate public highways, streets, alleys or easements if it is found that the city has no current or future need for these lands. Proceedings to vacate such land may be commenced by petition of a majority of the owners of property fronting upon the portion of the public highway, street, alley or easement to be vacated, by action of the St. Louis Park City Council or by recommendation of the St. Louis Park Planning Commission. In order to constitute a petition for vacation, a majority of abutting property owners of the portion of public highway or street to be vacated must appear on the petition form. If the request is for vacation of a public alley or easement, it must be signed by the majority of owners of property adjacent to the alley or easement in the block where the alley or easement is situated, whether or not the petition requests vacation of the entire alley or easement. The petition shall be filed with the city clerk. If the application represents a request to the planning commission to recommend and to the city council to initiate vacation, that must be specifically stated. The applicant is encouraged to discuss the proposal with community development staff prior to completion of final plans and filing of a petition/request. Submittal checklist ☐ Petition/request ☐ Filing fee (see application for fee schedule) ☐ A complete and accurate legal property description must be submitted if the property to be vacated is an easement. -
Increasing Highway Capacity Unlikely to Relieve Traffic Congestion
October 2015 Increasing Highway Capacity Unlikely to Relieve Traffic Congestion Susan Handy Department of Environmental Science and Policy Contact Information: University of California, Davis [email protected] Issue Reducing traffic congestion is often Increased roadway capacity induces proposed as a solution for improving fuel additional VMT in the short-run and even efficiency and reducing greenhouse gas more VMT in the long-run. A capacity (GHG) emissions. Traffic congestion has expansion of 10% is likely to increase VMT traditionally been addressed by adding by 3% to 6% in the short-run and 6% to additional roadway capacity via constructing 10% in the long-run. Increased capacity entirely new roadways, adding additional can lead to increased VMT in the short-run lanes to existing roadways, or upgrading in several ways: if people shift from other existing highways to controlled-access modes to driving, if drivers make longer freeways. Numerous studies have examined trips (by choosing longer routes and/or the effectiveness of this approach and more distant destinations), or if drivers 3,4,5 consistently show that adding capacity to make more frequent trips. Longer-term roadways fails to alleviate congestion for effects may also occur if households and long because it actually increases vehicle businesses move to more distant locations miles traveled (VMT). or if development patterns become more dispersed in response to the capacity An increase in VMT attributable to increases increase. One study concludes that the BRIEF in roadway