Freeway Speed Limits under Inclement Weather Conditions
Over the past decade, over speeding has been identified to be the most dominant factor contributing to the occurrence of severe crashes and injuries on freeways, and thus speed limit performs the most popular countermeasure. However, few studies have focused on the problem of freeway speed limits i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad de Antioquia
2015-02-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/16912 |
| _version_ | 1797861769469755392 |
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| author | Yonggang Wang Ming Li Lei Feng |
| author_facet | Yonggang Wang Ming Li Lei Feng |
| author_sort | Yonggang Wang |
| collection | DOAJ |
| description |
Over the past decade, over speeding has been identified to be the most dominant factor contributing to the occurrence of severe crashes and injuries on freeways, and thus speed limit performs the most popular countermeasure. However, few studies have focused on the problem of freeway speed limits in bad weather due to reduction of visibility and pavement friction. Therefore, the primary purpose of this research is to develop a prototype of speed limits recommendations for basic freeway segments under the inclement weather conditions. If the leading vehicle makes a sudden stop, the travelling distance of the following vehicle is divided into four phases. Assuming the visibility is no less than the safe following distance between consecutive vehicles, consequently, a parabolic equation is constructed to describe the relation between the vehicle’s maximum safe speed, pavement conditions, segment slope and visibility, and then maximum safe speed is rounded down to the nearest multiple of 5 as the proposed speed limit under the fogy, rainy or snowy conditions.
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| first_indexed | 2024-04-09T22:08:27Z |
| format | Article |
| id | doaj.art-932a78033fbb455f875da222a50d5bc1 |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-04-09T22:08:27Z |
| publishDate | 2015-02-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-932a78033fbb455f875da222a50d5bc12023-03-23T12:31:20ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442015-02-017410.17533/udea.redin.16912Freeway Speed Limits under Inclement Weather ConditionsYonggang Wang0Ming Li1Lei Feng2Chang'an UniversityChang'an UniversityXi'an Polytechnic University Over the past decade, over speeding has been identified to be the most dominant factor contributing to the occurrence of severe crashes and injuries on freeways, and thus speed limit performs the most popular countermeasure. However, few studies have focused on the problem of freeway speed limits in bad weather due to reduction of visibility and pavement friction. Therefore, the primary purpose of this research is to develop a prototype of speed limits recommendations for basic freeway segments under the inclement weather conditions. If the leading vehicle makes a sudden stop, the travelling distance of the following vehicle is divided into four phases. Assuming the visibility is no less than the safe following distance between consecutive vehicles, consequently, a parabolic equation is constructed to describe the relation between the vehicle’s maximum safe speed, pavement conditions, segment slope and visibility, and then maximum safe speed is rounded down to the nearest multiple of 5 as the proposed speed limit under the fogy, rainy or snowy conditions. https://revistas.udea.edu.co/index.php/ingenieria/article/view/16912inclement weathervisibilitypavement frictionmaximum safe speedspeed limit |
| spellingShingle | Yonggang Wang Ming Li Lei Feng Freeway Speed Limits under Inclement Weather Conditions Revista Facultad de Ingeniería Universidad de Antioquia inclement weather visibility pavement friction maximum safe speed speed limit |
| title | Freeway Speed Limits under Inclement Weather Conditions |
| title_full | Freeway Speed Limits under Inclement Weather Conditions |
| title_fullStr | Freeway Speed Limits under Inclement Weather Conditions |
| title_full_unstemmed | Freeway Speed Limits under Inclement Weather Conditions |
| title_short | Freeway Speed Limits under Inclement Weather Conditions |
| title_sort | freeway speed limits under inclement weather conditions |
| topic | inclement weather visibility pavement friction maximum safe speed speed limit |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/16912 |
| work_keys_str_mv | AT yonggangwang freewayspeedlimitsunderinclementweatherconditions AT mingli freewayspeedlimitsunderinclementweatherconditions AT leifeng freewayspeedlimitsunderinclementweatherconditions |