scholarly journals Safety Assessment of Auxiliary Lanes in Freeway Interchange Weaving Areas based on Traffic Conflict Technique

2017 ◽  
Vol 124 ◽  
pp. 04005
Author(s):  
Rao Yao ◽  
Qiaojun Xiang ◽  
Xin Gu ◽  
Yifan Guo ◽  
Ting Zhang
Keyword(s):  
Safety Assessment ◽  
Traffic Conflict ◽  
Auxiliary Lanes

scholarly journals Road safety assessment in preferential bus lanes through field analysis and microsimulation of traffic conflicts

2019 ◽  
pp. 87-100 ◽  
Author(s):  
Julián Darío Julián Otero-Niño ◽  
Juan David Heredia-Castiblanco ◽  
Paula Daniela Fonseca-Agudelo ◽  
Sebastián Cabrera-Pinzón ◽  
Alejandro Gómez-Mosquera ◽  
...  
Keyword(s):  
Public Transport ◽  
Road Safety ◽  
Safety Assessment ◽  
Stopping Time ◽  
Field Analysis ◽  
Road Users ◽  
Traffic Conflicts ◽  
Traffic Conflict ◽  
Field Information ◽  
The One

Preferential bus lanes are a widely use strategy to promote travelers to use public transport instead of private cars. Considering its relevance in the urban transportation planning and operation, it is crucial to evaluate them in terms of the operation and safety externality. We performed a road safety assessment in preferential public transport lanes with complex driving environment using a preventive approach on the 7 th Avenue, in Bogota (Colombia), between 39 th Street and 45 th Street. A detailed study of traffic conflicts was carried out under the guidelines of the Swedish technique, which uses the Time to accident and Conflicting speed to establish the severity of a conflict. A traffic conflict is defined as an incident where, if two road users on collision course maintain their speed and trajectory constant, the crash between them will be imminent. With the field information, we calibrated a VISSIM microsimulation model that correctly replicates its traffic operation. Using the SSAM tool, we validated the base model to identify the simulated traffic conflicts in VISSIM and compared them with the observed conflicts. Under the calibrated environment, we developed and assessed three different scenarios of countermeasures to reduce the number of conflicts observed. As a result, we found that the safest scenario is the one established in the regulations that normalize the operation in preferential lanes, currently not obeyed by most users. Based on our results, we recommend an adjustment in the normative measures, including regulating the stopping time and stopping zones of private vehicles and taxis.

A systematic mapping review of surrogate safety assessment using traffic conflict techniques

2021 ◽  
Vol 153 ◽  
pp. 106016
Author(s):  
Ashutosh Arun ◽  
Md Mazharul Haque ◽  
Ashish Bhaskar ◽  
Simon Washington ◽  
Tarek Sayed
Keyword(s):  
Safety Assessment ◽  
Systematic Mapping ◽  
Traffic Conflict ◽  
Mapping Review ◽  
Systematic Mapping Review

scholarly journals A brief review: traffic conflict techniques and the challenges of the studies in Indonesia

2019 ◽  
Vol 270 ◽  
pp. 03004
Author(s):  
Naomi Srie Kusumastutie ◽  
Pipit Rusmandani
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Video Analysis ◽  
Road Safety ◽  
Safety Assessment ◽  
Assessment Model ◽  
Analysis Tool ◽  
The Past ◽  
Traffic Conflict ◽  
Aerial Vehicle ◽  
Automated Video Analysis

For the past 50 years, Traffic Conflict Technique (TCT) has been growing rapidly as Surrogate Safety Measure (SSM). Unfortunately, the study of TCT as a road safety analysis tool in Indonesia is still limited. This article aims to describe the developments of TCT, regarding to the use of manual observation, automated video analysis and simulations with the Surrogate Safety Assessment Model (SSAM). This article also aims to identify the challenges of TCT implementation in improving road safety in Indonesia. Thus, it is expected to inspire researchers in Indonesia to develop TCT, for example by using Unmanned Aerial Vehicle (UAV) and microsimulation in TCT studies.

scholarly journals Mikrosimulasi Kinerja Simpang Bersinyal Dengan Menggunakan Software Surrogate Safety Assessment Model (SSAM) di Kota Malang (Studi Kasus: Simpang Terusan Sulfat)

2020 ◽  
Vol 14 (2) ◽  
pp. 120-128
Author(s):  
Pipit Rusmandani ◽  
◽  
Enrico Pria Anggana ◽  
Agus Sasmito ◽  
◽  
...  
Keyword(s):  
Data Analysis ◽  
Experimental Research ◽  
Safety Assessment ◽  
Service Level ◽  
Assessment Model ◽  
Lane Change ◽  
The Road ◽  
Traffic Conflict

Safety, speed, and capacity should be taken into account for designing intersection (AASHTO, 2001). Therefore, it is necessary to know the conflicts at the intersection. This experimental research aims (1) to find out the performance of Malang Sulfate Canal intersection, (2) to know the conflicts in it, and (3) to find the best recommendation. MKJI, PTV Vissim 10, and Surrogate Safety Assessment (SSAM) were used for data analysis. The result shows that the delay value at the peak hour was 54.4 seconds with an E service level category. The conflicts at the highest peak hours were 2782 conflicts (2035 crossing conflicts and 747 lane-change conflicts). At the end, widening the road reduced the number of traffic conflict by 26% and the delay value by 2%.

scholarly journals Navigational Traffic Conflict Technique: A Proactive Approach to Quantitative Measurement of Collision Risks in Port Waters

2009 ◽  
Vol 63 (1) ◽  
pp. 137-152 ◽  
Author(s):  
Ashim Kumar Debnath ◽  
Hoong Chor Chin
Keyword(s):  
Safety Assessment ◽  
Quantitative Measurement ◽  
Safety Analysis ◽  
Collision Risk ◽  
Promising Alternative ◽  
Proactive Approach ◽  
Alternative Approach ◽  
Traffic Conflict

Navigational safety analysis relying on collision statistics is often hampered because of the low number of observations. A promising alternative approach that overcomes this problem is proposed in this paper. By analyzing critical vessel interactions this approach proactively measures collision risk in port waters. The proposed method is illustrated for quantitative measurement of collision risks in Singapore port fairways, and validated by examining correlations between the measured risks with those perceived by pilots. This method is an ethically appealing alternative to the collision-based analysis for fast, reliable and effective safety assessment, thus possessing great potential for managing collision risks in port waters.

Abstract #379 The Eversense CGM System Accuracy and Safety Assessment on the Abdomen Compared to the Upper Arm in a Home Use Setting

2019 ◽  
Vol 25 ◽  
pp. 173
Author(s):  
Magnus Löndahl ◽  
Mona Landin-Olsson ◽  
Stig Attval ◽  
Colleen Mdingi ◽  
Katherine S Tweden
Keyword(s):  
Safety Assessment ◽  
Upper Arm
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