Pedestrian Safety Versus Traffic Flow: Finding the Balance

2021 ◽  
pp. 165-187
Author(s):  
Robert B. Noland
Keyword(s):  
Traffic Flow ◽  
Pedestrian Safety

scholarly journals Prioritizing Safety or Traffic Flow? Qualitative Study on Highly Automated Vehicles’ Potential to Prevent Pedestrian Crashes with Two Different Ambitions

2020 ◽  
Vol 12 (8) ◽  
pp. 3206
Author(s):  
Roni Utriainen ◽  
Markus Pöllänen
Keyword(s):  
Qualitative Study ◽  
Traffic Flow ◽  
Pedestrian Safety ◽  
Automated Vehicles ◽  
Passenger Cars ◽  
High Expectations ◽  
Fatal Crashes ◽  
Pedestrian Crashes

Interaction between drivers and pedestrians enables pedestrians to cross the street without conflicts. When highly automated vehicles (HAVs) become prevalent, interaction will change. Although HAVs manage to identify pedestrians, they may not be able to assess pedestrians’ intentions. This study discusses two different ambitions: Prioritizing pedestrian safety and prioritizing efficient traffic flow; and how these two affect the possibilities to avoid fatal crashes between pedestrians and passenger cars. HAVs’ hypothetical possibilities to avoid different crash scenarios are evaluated based on 40 in-depth investigated fatal pedestrian crashes, which occurred with manually-driven cars in Finland in 2014–2016. When HAVs prioritize pedestrian safety, they decrease speed near pedestrians as a precaution which affects traffic flow due to frequent decelerations. When HAVs prioritize efficient traffic flow, they only decelerate, when pedestrians are in a collision course. The study shows that neither of these approaches can be applied in all traffic environments, and all of the studied crashes would not likely be avoidable with HAVs even when prioritizing pedestrian safety. The high expectations of HAVs’ safety benefits may not be realized, and in addition to safety and traffic flow, there are many other objectives in traffic which need to be considered.

Enhancing pedestrian safety, walkability and traffic flow with fuzzy logic

2020 ◽  
Vol 701 ◽  
pp. 134454 ◽  
Author(s):  
Sharaf AlKheder ◽  
Fahad AlRukaibi
Keyword(s):  
Fuzzy Logic ◽  
Traffic Flow ◽  
Pedestrian Safety

Experimental field test of proposed pedestrian safety messages: Volume II: Child messages

1983 ◽  
Author(s):  
Richard D. Blomberg ◽  
David F. Preusser ◽  
Allen Hale ◽  
William A. Leaf
Keyword(s):  
Field Test ◽  
Pedestrian Safety ◽  
Experimental Field

The Analysis of Traffic Flow State on Foggy Expressway Based on Fuzzy Clustering

ICCTP 2009 ◽  
2009 ◽  
Author(s):  
Jianjun Wang ◽  
Chenfeng Xie ◽  
Zhenwen Chang ◽  
Jingjing Zhang
Keyword(s):  
Traffic Flow ◽  
Fuzzy Clustering ◽  
Flow State
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