Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes
The main objective of this study is to evaluate the safety and operational impacts of an innovative infrastructure solution for safe and efficient integration of Automated Vehicle (AV) as an emerging technology into an existing transportation system. Filling the gap in the limited research on the ef...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Journal of Advanced Transportation |
| Online Access: | http://dx.doi.org/10.1155/2021/6617205 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550468059922432 |
|---|---|
| author | Sahar Ghanipoor Machiani Alidad Ahmadi Walter Musial Anagha Katthe Benjamin Melendez Arash Jahangiri |
| author_facet | Sahar Ghanipoor Machiani Alidad Ahmadi Walter Musial Anagha Katthe Benjamin Melendez Arash Jahangiri |
| author_sort | Sahar Ghanipoor Machiani |
| collection | DOAJ |
| description | The main objective of this study is to evaluate the safety and operational impacts of an innovative infrastructure solution for safe and efficient integration of Automated Vehicle (AV) as an emerging technology into an existing transportation system. Filling the gap in the limited research on the effect of AV technology on infrastructure standards, this study investigates implications of adding a narrow reversible AV-exclusive lane to the existing configuration of I-15 expressway in San Diego, resulting in a 9 ft AV reversible lane and, in both directions, two 12-feet lanes for HOV and FasTrak vehicles. Given the difference between the operation of AVs and human-driven vehicles and reliance of AVs on sensors as opposed to human capabilities, the question is should we provide narrower AV-exclusive roadways assuming AVs are more precise in lateral and longitudinal lane keeping behaviour? To accomplish the goal of the project, a historical crash data analysis and a traffic simulation analysis were conducted. Crash data analysis revealed that unsafe speed, improper turning, and unsafe lane change are the most recurring primary collision factors on I-15 ELs. AVs’ automated longitudinal and lateral control systems could potentially reduce these types of collisions on an AV-exclusive lane with proper infrastructure features for AV sensor operation (e.g., distinct lane marking). Microsimulation findings indicated an AV-exclusive lane may increase traffic flow and density by up to 14% and 24%, respectively. It also showed that average speed is reduced. However, this could lead to the speed differential increase between the exclusive lane and adjacent lane requiring careful consideration if additional treatments or barriers are needed. The results of this study contribute to infrastructure adaptation to AV technology and future AV-exclusive lanes implementations. |
| format | Article |
| id | doaj-art-14b6c4a084284281810a9b68d048c727 |
| institution | Kabale University |
| issn | 0197-6729 2042-3195 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Advanced Transportation |
| spelling | doaj-art-14b6c4a084284281810a9b68d048c7272025-02-03T06:06:39ZengWileyJournal of Advanced Transportation0197-67292042-31952021-01-01202110.1155/2021/66172056617205Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express LanesSahar Ghanipoor Machiani0Alidad Ahmadi1Walter Musial2Anagha Katthe3Benjamin Melendez4Arash Jahangiri5Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego 92182, CA, USALinscott, Law & Greenspan, Engineers, San Diego, CA, USALinscott, Law & Greenspan, Engineers, San Diego, CA, USADepartment of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego 92182, CA, USADepartment of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego 92182, CA, USADepartment of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego 92182, CA, USAThe main objective of this study is to evaluate the safety and operational impacts of an innovative infrastructure solution for safe and efficient integration of Automated Vehicle (AV) as an emerging technology into an existing transportation system. Filling the gap in the limited research on the effect of AV technology on infrastructure standards, this study investigates implications of adding a narrow reversible AV-exclusive lane to the existing configuration of I-15 expressway in San Diego, resulting in a 9 ft AV reversible lane and, in both directions, two 12-feet lanes for HOV and FasTrak vehicles. Given the difference between the operation of AVs and human-driven vehicles and reliance of AVs on sensors as opposed to human capabilities, the question is should we provide narrower AV-exclusive roadways assuming AVs are more precise in lateral and longitudinal lane keeping behaviour? To accomplish the goal of the project, a historical crash data analysis and a traffic simulation analysis were conducted. Crash data analysis revealed that unsafe speed, improper turning, and unsafe lane change are the most recurring primary collision factors on I-15 ELs. AVs’ automated longitudinal and lateral control systems could potentially reduce these types of collisions on an AV-exclusive lane with proper infrastructure features for AV sensor operation (e.g., distinct lane marking). Microsimulation findings indicated an AV-exclusive lane may increase traffic flow and density by up to 14% and 24%, respectively. It also showed that average speed is reduced. However, this could lead to the speed differential increase between the exclusive lane and adjacent lane requiring careful consideration if additional treatments or barriers are needed. The results of this study contribute to infrastructure adaptation to AV technology and future AV-exclusive lanes implementations.http://dx.doi.org/10.1155/2021/6617205 |
| spellingShingle | Sahar Ghanipoor Machiani Alidad Ahmadi Walter Musial Anagha Katthe Benjamin Melendez Arash Jahangiri Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes Journal of Advanced Transportation |
| title | Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes |
| title_full | Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes |
| title_fullStr | Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes |
| title_full_unstemmed | Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes |
| title_short | Implications of a Narrow Automated Vehicle-Exclusive Lane on Interstate 15 Express Lanes |
| title_sort | implications of a narrow automated vehicle exclusive lane on interstate 15 express lanes |
| url | http://dx.doi.org/10.1155/2021/6617205 |
| work_keys_str_mv | AT saharghanipoormachiani implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes AT alidadahmadi implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes AT waltermusial implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes AT anaghakatthe implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes AT benjaminmelendez implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes AT arashjahangiri implicationsofanarrowautomatedvehicleexclusivelaneoninterstate15expresslanes |