A Technique for Escape Ramp Location Determination in China's Mountain Area Expressway

Zhou, Jian; Liu, Qingxia; Chai, Hua; Zhou, R.

doi:10.1061/41127(382)61

Cited by 3 publications

(4 citation statements)

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“…e results of this study revealed the experiences of state DOTs regarding design principles, operation and maintenance practices, and determination of the location of emergency escape ramps [12]. Moreover, there are various studies in the literature focusing on determining the location of emergency escape ramps [13,14], the design for approaching the ramp [15], analysis of incidents in emergency escape ramps and legal risk mitigation [16], and analysis of aggregate property influences on stopping distance on emergency escape ramps [17].…”

Section: Literature Reviewmentioning

confidence: 89%

“…Emergency escape ramps often exist because of freight trucks and in the event that the brakes fail, and vehicles such as empty trucks, other light trucks, and passing cars that may enter the ramps can cause improper use of ramps [21][22][23]. In the maintenance of emergency escape ramps, items such as material granulation, wheel path, guardrails, and lights should also be controlled [14,24,25].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Few studies have been conducted on the location of emergency escape ramps. However, some studies indicated that the ramp location is closely related to brake drum temperature, location of invalid braking, drivers' safety consciousness for using rest areas, the configuration of rest areas, and speed management on downgrade sections [14,31]. Abdelwahab and Morral conducted a study to determine the need for a location of an emergency truck ramp.…”

Section: Literature Reviewmentioning

confidence: 99%

“…e steps for the location of the escape ramps at the mountain expressways of this research were the definition of long continuous downgrade section, calculation of brake drum temperature to estimate the initial location of escape ramps, final configuration of escape ramp due to construction constraints, and verification of load weight-based speed management [14]. Song et al conducted a study to determine the optimal location for the escape ramp in the vicinity of expressway tunnels in mountainous areas.…”

Section: Literature Reviewmentioning

confidence: 99%

See 3 more Smart Citations

Location of Emergency Escape Ramps on Two-Lane Rural Highways Based on the Fuzzy Multicriteria Decision-Making Method

Heidarian

Kordani

Sarkar

et al. 2022

Journal of Engineering

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Today, the lack of practical research is one of the most important concerns worldwide, and location, which is an important issue in most projects, has received less attention from experts. In this study, the location criteria of emergency escape ramps were examined, and according to the Myers formula, the temperature-distance diagram along the route was obtained. Also, the speed of vehicles entering the escape ramp was examined according to the American Association of State Highway and Transportation Officials (AASHTO) in the proposed options that were obtained from the experts. Then, 3 general criteria and 16 subcriteria were classified, and finally, the importance of criteria was examined by the fuzzy analytic hierarchy process (F-AHP), and the high-priority options were illustrated using the fuzzy technique for order performance by similarity to ideal solution (F-TOPSIS). The proposed options were evaluated and prioritized for an emergency escape ramp on the two-lane rural highways of Salavat Abad village pass of Sanandaj city, Kurdistan Province, Iran. The results showed that the technical criteria with more than 69% among the general criteria and subcriteria of the percentage of longitudinal slope, longitudinal slope length, and vehicle design speed were the most important factors influencing the location of an emergency escape ramp. Moreover, among the proposed options, the four options 3, 4, 5, and 6 had the highest score, and option 6 (Kurkur turn (2)) was identified as the most priority location for implementing the emergency escape ramp.

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