China
Africa
Explore chapters and articles related to this topic
Preliminary Engineering
Published in Connie Kelly Tang, Lei Zhang, Principles and Practices of Transportation Planning and Engineering, 2021
Rumble strips are grooves in the otherwise flat pavement surface next to the outside of a travel lane that generate significant vibrations when tires run on top of them. These vibrations alert drivers to the fact that the vehicles they are operating just deviate from their supposed path. Corrective actions are needed. For example, a driver that has accidentally crossed the centerline will be alerted by the sound and vibrations a rumble strip generates. Types of rumble strips include transverse rumble strips, shoulder rumble strips, and centerline rumble strips.
A Story of a Failure
Published in Todd Conklin, Pre-Accident Investigations, 2019
Probably my personal favorite defense against vehicle accident consequence is the humble rumble strip (pardon my rhyme). Rumble strips are the grooves that are placed in the actual road surface along the roadside, just outside the normal driving system, that alert the driver that they have drifted out of the system. These strips vibrate and audibly alert driver that something in the system is different.
Economic analysis of mobility improvements
Published in Zongzhi Li, Transportation Asset Management, 2018
Rumble strips may be considered another form of pavement markings—raised or grooved patterns installed on the pavement surface of a travel lane or a shoulder to cause a vibration and sound that alerts inattentive drivers that their vehicles are leaving the travel lane. Studies have demonstrated the benefits of shoulder rumble strips in reducing death and serious injury caused by inattentive drivers in run-off-road (ROR) collisions due to distraction and fatigue. However, they are not effective in eliminating ROR collisions by excessive speed, sudden turns to avoid on-road collisions or high-angle encroachments.
Developing methods and strategies to reduce the impact of rumble strips (RS) on pavement performance
Published in International Journal of Pavement Engineering, 2023
Joshua Weaver, Vipul Chitnis, Erdem Coleri
Centreline and shoulder rumble strips (CLRS&SRS) are milled components constructed on rural roads, hilly terrain, and between opposing lanes on multilane highways. These safety features create noise and vibrations in the vehicles when it passes over rumble strips. These vibrations alert drivers and help them avoid unintended lane changes, reducing head-on collisions (Kalathas et al. 2019). Earlier studies have shown that installing CLRS has resulted in a significant reduction in crashes and has proven to be a cost-effective safety measure (Torbic et al. 2009, Donnell et al. 2014). CLRS vibration also acts as a navigational aid during fog, snow, or blinding rain to assist drivers from crossing the centreline during these conditions (FHWA 2011). However, rumble stripes are milled by cutting groves in the pavements using a rotary rumble strip grinder (Hawkins et al. 2016). This milling process involves striking off a certain thickness of asphalt, which may lead to pavement deterioration, raising concerns over RS installation. Several departments of transportation (DOTs) have reported issues related to pavement performance due to the aggressive installation of rumble strips (Smadi and Hawkins 2016).
Safety evaluation of four safety countermeasures on freeways in South Korea
Published in Journal of Transportation Safety & Security, 2020
Yoon-Young Choi, Dong-Kyu Kim, Seung-Young Kho, Peter Y. Park
Automated speed enforcement cameras measure individual vehicles’ travel speed and detect whether a vehicle is violating the posted speed limit. The cameras are expected to reduce the number of crashes associated with speeding (or, more precisely, the number of crashes associated with exceeding the posted speed limit). Chevron signs are designed to inform drivers about the direction and sharpness of upcoming horizontal curves. The signs are expected to reduce the number of crashes associated with unexpected changes in horizontal alignment along a freeway. Delineator posts are designed to maintain traffic flows within a traffic lane and reduce the number of traffic conflicts that occur when drivers change lanes. The posts are expected to reduce the number of crashes associated with lane changing (e.g., sideswipe crashes are typical of crashes associated with lane changing). Shoulder rumble strips use a series of indented or raised elements of the paved roadway to generate noise and vibration. The rumble strips are designed to alert inattentive drivers and are expected to reduce the number of crashes associated with, for example, fatigue or distraction (e.g., roadway departure crashes are typical of such crashes). These roles of the safety facility are described in ‘Guidelines for the installation and management of road safety facilities’. The Korean Expressway Corporation has been managed the freeways in Korea by following this administrative rule (Ministry of Land, Infrastructure, and Transport, 2016b).
Underutilized strategies in traffic safety: Results of a nationally representative survey
Published in Traffic Injury Prevention, 2019
Highway engineering. Roundabouts that replace signalized intersections practically eliminate T-bone side collisions that can result in serious and fatal injuries. One study showed that roundabouts reduced crashes of all severities by 38% (Retting et al. 2001). Rumble strips on the road edge and the center line have been shown to keep drowsy drivers awake and avoid run-off-the-road and head-on collisions. One multistate study found significant crash modifications for run-off-road, head-on, and sideswipe-opposite-direction crashes due to rumble strips (Lyon et al. 2015).