Guidance for Effective Use of Pylons for Lane Separation on Preferential Lanes and Freeway Ramps Page: VII
236 p.View a full description of this report.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
TABLE OF CONTENTS
Section Page
List of Figures............................................................................................................................... ix
List of Tables ................................................................................................................................ xi
Chapter 1: Introduction ......................................................................................................... 1
Background................................................................................................................................. 2
Methodology............................................................................................................................... 3
Chapter 2: State-of-Practice Review ....................................................................................... 7
Pylon Term inology.....................................................................................................................7
Pylon Assem bly Com ponents................................................................................................ 10
Com m on Applications of Pylons ........................................................................................... 14
Pylon Implem entation Factors .............................................................................................. 20
Examples of Pylon Use on Preferential Lane Facilities ...................................................... 22
Product Perform ance Testing of Pylons ................................................................................30
Implem entation Guidance..................................................................................................... 33
Pylon Encroachment ................................................................................................................. 33
Issues with Pylon Use ............................................................................................................... 38
Summary................................................................................................................................... 39
Chapter 3: V endor Interview s................................................................................................ 45
Purpose of Vendor Interviews .................................................................................................45
V vendor Survey M ethodology.................................................................................................45
Sum m ary of Vendor Survey Results .................................................................................... 46
Chapter 4: Survey of Transportation Agencies .................................................................... 49
Purpose of Survey..................................................................................................................... 49
Methodology of Survey ............................................................................................................ 49
Transportation Agency Survey Results ................................................................................ 51
Agency Survey Conclusions.................................................................................................. 64
Chapter 5: Video Case Studies................................................................................................67
Purpose...................................................................................................................................... 67
Case Study Sites........................................................................................................................ 67
Data Collection ......................................................................................................................... 77
Data Reduction ......................................................................................................................... 80
Data Analysis............................................................................................................................ 81
Chapter 6: Safety Experience of Pylon Implementations ....................................................95
Data Collection ......................................................................................................................... 95
Data Analysis............................................................................................................................ 96
Chapter 7: Maintenance Experience of Pylon Implementation.....................103
Method.................................................................................................................................... 103
Summary Of Results............................................................................................................... 103
Other Observations ................................................................................................................. 106
Frontage Road Entrance Exit Implementation Guidance ....................................................... 106
Pylon Contrast......................................................................................................................... 119
Conclusions............................................................................................................................. 121Vii
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Kuchangi, Shamanth P.; Benz, Robert J. (Robert Joseph); Nelson, Alicia A.; Voigt, Anthony P.; Stevens, Roma G.; Wikander, John P. et al. Guidance for Effective Use of Pylons for Lane Separation on Preferential Lanes and Freeway Ramps, report, May 2013; College Station, Texas. (https://texashistory.unt.edu/ark:/67531/metapth654141/m1/9/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.