Impacts of Design Exceptions on Highway Safety

Stamatiadis, Nikiforos; Psarianos, Basil

doi:10.14257/ijt.2017.5.1.01

Cited by 4 publications

(2 citation statements)

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“…Other research has compared the safety performance of locations with SSD design exceptions with that of locations that meet minimum SSD criteria (25)(26)(27). The design exceptions related to SSD in these papers ranged from 65 of 562 (27), four of 61 exceptions (25), and an unspecified percentage (26). The research articles on design exceptions all indicated that there were no differences in safety performance for crash rate, crash frequency, or crash severity between locations that meet and that do not meet minimum SSD criteria.…”

Section: Safety Impacts Of Ssdmentioning

confidence: 99%

Stopping Sight Distance and Available Sight Distance: New Model and Reliability Analysis Comparison

Wood

Donnell

2017

Transportation Research Record: Journal of the Transportation R

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Stopping sight distance (SSD) is an important design criterion used in the geometry of highways and streets. Design guidance implies that SSD is used to ensure safety along the roadway. This paper reviews SSD design criteria and develops an updated model to improve consistency between available sight distance and SSD criteria found in geometric design policy. A new variable, the distance from the front of the car to the driver’s eye ( Lfront-eye), is used in the updated model. Distributional values for Lfront-eye are determined. A method accounting for lighted (daytime and lighted nighttime) versus unlighted nighttime conditions is also discussed. A probabilistic analysis of vertical curve SSD uses Monte Carlo simulation. The results of this analysis are compared with the SSD model found in current geometric design policy. Possible values for Lfront-eye that can be used in design guidance are proposed. Potential issues that should be investigated in future work are discussed.

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Section: Safety Impacts Of Ssdmentioning

confidence: 99%

Stopping Sight Distance and Available Sight Distance: New Model and Reliability Analysis Comparison

Wood

Donnell

2017

Transportation Research Record: Journal of the Transportation R

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“…In VSNs, emergence messages have to be disseminated without any time delay to avoid potential accidents [13][14][15][16][17][18][19][20]. If some neighbor vehicles don't receive the emergency message because of message collision or transmission error [21], they may be exposed to secondary accidents. To resolve these problems, many research works are proposed in VANETs [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Mobility Prediction Based Multi-Directional Broadcasting for Both Highway and Urban Vehicular Sensor Networks

Ryu

Cha

2020

IEEE Access

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This paper proposes a mobility prediction based multi-directional broadcasting (MPMB) protocol for both highway and urban Vehicular Sensor Networks (VSNs). VSNs have to ensure the prompt dissemination of critical sensing data to all vehicles within the Region of Interest (ROI) to avoid various road dangers. Several research studies have proposed various broadcasting protocols, but most of them just focus on either highway or urban scenarios. MPMB protocol is derived from the mobility prediction based directed broadcasting (MPDB) protocol which is a single directional broadcasting protocol for highways. The main purpose of MPMB is to improve broadcasting efficiency in both highway and urban scenarios. To do this, MPMB adopts the adaptive directional sectors and the Store-Carry-Forward (SCF) scheme to select the next broadcasting (rebroadcasting) vehicles based on the mobility prediction. MPMB protocol consists of (i) mobility prediction stage and (ii) broadcasting stage. In the mobility prediction stage, each vehicle predicts the Link Available Time (LAT) of its all neighbor vehicles through periodical beaconing. In the broadcasting stage, each broadcasting vehicle adaptively selects a vehicle with the largest LAT value predicted in the previous mobility prediction stage as a rebroadcasting vehicle in each possible directional sector. The simulation results show that MPMB protocol has better performance in terms of packet delivery rate and packet delay in comparison with three well-known reference protocols in both highway and urban scenarios with various traffic density.

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Application of Electric Power Automation System Based on Power Distribution Network

Zhao

2019

Advances in Intelligent Systems and Computing

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Impacts of Design Exceptions on Highway Safety

Abstract: Abstract

Cited by 4 publications

References 1 publication

Stopping Sight Distance and Available Sight Distance: New Model and Reliability Analysis Comparison

Stopping Sight Distance and Available Sight Distance: New Model and Reliability Analysis Comparison

Mobility Prediction Based Multi-Directional Broadcasting for Both Highway and Urban Vehicular Sensor Networks

Application of Electric Power Automation System Based on Power Distribution Network

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