Related Experiment Video
Updated: Jun 6, 2026
14:55
Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
Published on: January 20, 2023
Effects of roadside memorials on traffic flow
Richard Tay1, Anthony Churchill, Alexandre G de Barros
1Faculty of Law and Management, La Trobe University, Melbourne, Victoria 3086, Australia. r.tay@latrobe.edu.au
Accident; Analysis and Prevention
|November 25, 2010
Summary
Roadside memorials did not significantly impact driver behavior, including traffic speed or headway, in either short-term or long-term freeway studies. Concerns about negative effects on drivers were not supported by this research.
Area of Science:
- Traffic Safety
- Human Factors in Transportation
- Roadside Design
Background:
- Roadside memorials are increasingly common in North America.
- Limited research exists on their impact on driver behavior.
- Understanding these effects is crucial for traffic safety and planning.
Purpose of the Study:
- To investigate the effects of roadside memorials on driver behavior.
- To analyze impacts on traffic speed and headways on freeways.
- To assess both short-term and long-term effects.
Main Methods:
- Examined short-term effects on traffic speed and headways on an intercity freeway.
- Assessed long-term effects on traffic speed on an urban freeway.
- Utilized observational traffic data analysis.
Main Results:
- No significant impact on traffic speeds was observed.
- No significant impact on driver headways was found.
- Effects were consistent in both short-term and long-term analyses.
Conclusions:
- Concerns regarding negative driver behavior impacts (speeding, tailgating) are not supported by this study.
- Roadside memorials did not demonstrate a significant effect on driver behavior.
- No positive safety effects were identified.
Related Concept Videos
01:41Social Traps
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned more cows, the larger...
01:16Flashbulb Memory
A flashbulb memory is a highly vivid and detailed memory, often linked to events of significant emotional impact. These memories stand out in contrast to everyday memories due to their clarity and the precision with which they are recalled. The strong emotions associated with the event act as a catalyst, ensuring that specific details, such as one's location, actions, and even peripheral elements, are etched into memory with remarkable accuracy. For example, many people can vividly recall where...
01:29Sight Distance in a Vertical Curve
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
01:20Traumatic Memory
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual remembers mundane...
01:17Design Example: Alignment of a Road Line Using GIS
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
01:28Survey Safety
Surveying near highways, rough terrain, or power lines involves significant risks. Working along highways is particularly dangerous and requires the use of warning signs and flagmen. It is safest to avoid working directly on roads and use offsets whenever possible. When highway work is unavoidable, it must follow all safety guidelines. Surveyors should wear bright clothing, such as orange reflective vests, to ensure visibility to motorists, coworkers, and hunters. In construction zones, wearing...