The roles of garment design and scene complexity in the daytime conspicuity of high-visibility safety apparel

Sayer, James R.; Buonarosa, Mary Lynn

doi:10.1016/j.jsr.2007.12.004

Cited by 14 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study of conspicuity aids in daylight 172 and a similar study by the same authors in twilight conditions 209 suggest that conspicuity aids perform well in terms of increased detection distances under these conditions. Background complexity and driver age were still significant effect modifiers reducing the effect of the conspicuity aids.…”

Section: Performance Of Conspicuity Aidsmentioning

confidence: 80%

“…They aid human perception by increasing the contrast between the treated object and its background. This effect is a relative one and is therefore may be more pronounced as light levels fall 201 . circumstances.…”

Section: Fluorescent Materialsmentioning

confidence: 99%

“…Scene complexity has been underresearched in the road accident literature related to cyclists specifically. There is evidence that for pedestrians, scene complexity is inversely proportional to recognition distances and that bio-motion arrays of conspicuity aids can improve performance perhaps by supplying more useful visual information for processing 172 . Pedestrians and cyclists share many characteristics which in the context of road safety mean that such findings are of relevance to both groups.…”

Section: Conspicuity and Bicycle Crashesmentioning

confidence: 99%

See 2 more Smart Citations

Use of conspicuity aids by cyclists and risk of crashes involving other road users: Population based case-control study

Miller

Kendrick

Coupland

et al. 2017

Journal of Transport & Health

View full text Add to dashboard Cite

Section: Performance Of Conspicuity Aidsmentioning

confidence: 80%

Section: Fluorescent Materialsmentioning

confidence: 99%

Section: Conspicuity and Bicycle Crashesmentioning

confidence: 99%

See 1 more Smart Citation

Use of conspicuity aids by cyclists and risk of crashes involving other road users: Population based case-control study

Miller

Kendrick

Coupland

et al. 2017

Journal of Transport & Health

View full text Add to dashboard Cite

“…For that reason, greater effort was applied to evaluating nighttime (retroreflective) performance of the in-use garments in this study. Examples of daytime and nighttime detection distances quantified in visual search tasks in simulated scenes can be seen in the published work for example of Sayer [13,17], Luoma [18], and Tyrrell [11].…”

Section: Instrumental Evaluation-fluorescencementioning

confidence: 99%

Firefighter Turnout Gear Durability Study—Evaluation of Visibility Trim

Cotterill

Easter

2010

Fire Technol

View full text Add to dashboard Cite

Abstract. The high visibility trim requirements for NFPA 1971for NFPA (2007 turnout gear are intended to provide the user conspicuity enhancements in both daytime and nighttime environments. This study evaluated the reflectance, color and fluorescence properties of high visibility trim on firefighters used turnout gear. Forty-four used garments, grouped in age categories from 2 to 10 years (retired), were visually evaluated according to the Section 4 of the NFPA 1851-Advanced Inspection Checklist. Advanced inspection identified damaged trim on 21 of the 46 garments. The damaged areas, located primarily at the cuffs and lower front hem, were not as reflective but passed the subjective flashlight test. A data sampling plan for retroreflective values was constructed for the coats and pants and the coefficients of retroreflection were collected to provide a measure of the nighttime conspicuity. To characterize the fluorescent (daytime) properties of the trim on the used garments the values for fluorescence and color box coordinates were measured. The measured coefficient of retroreflection (R A , cd/lux/m 2 ) for all garments (average of all values in the sampling plan) was greater than 39 the minimum NFPA 1851 requirement. Therefore, all used gear provided substantial nighttime conspicuity enhancement including the retired gear.

show abstract

“…For instance, digital avalanche transceivers [6], [7] are today integrated into apparel, helmets, protection gear or boots, and mobile phones are increasingly becoming ubiquitous computational devices [8]. Furthermore, pedestrians often already wear flashing beacons and high-visibility safety garments with retroreflective trim [9].…”

Section: Introductionmentioning

confidence: 99%

Using Sensor Networks for Pedestrian Detection

Senart

Karpiński

Wieckowski

et al. 2008

2008 5th IEEE Consumer Communications and Networking Conference

View full text Add to dashboard Cite

Abstract-Pedestrian safety is a major concern in road transportation as pedestrian/vehicle accidents account for the second largest cause of traffic-related injuries and fatalities worldwide. Considerable work has examined the use of lidar, radar and computer vision for pedestrian detection but existing solutions are costly and work only if pedestrians are in the vehicle's lineof-sight. In this paper, we present a novel technique based on wireless sensor networks that is cheap and enables pedestrian detection beyond the driver's horizon. The detection system is based on the use of "cat's eyes" augmented with embedded processing and communication capabilities that are able to detect pedestrians and forward this information along the road. We describe how such a system was successfully built with SOL, a high-level programming language for wireless sensor networks. Initial results show that the system obtains detection rates of 100%, false positive rates of 0%, and that the precision of the estimated position of pedestrians depends on their heading and relative position to sensor nodes.

show abstract

The roles of garment design and scene complexity in the daytime conspicuity of high-visibility safety apparel

Abstract: These findings will provide information to safety garment manufacturers about characteristics of high-visibility safety garments which make them effective for daytime use.

Cited by 14 publications

References 3 publications

Use of conspicuity aids by cyclists and risk of crashes involving other road users: Population based case-control study

Use of conspicuity aids by cyclists and risk of crashes involving other road users: Population based case-control study

Firefighter Turnout Gear Durability Study—Evaluation of Visibility Trim

Using Sensor Networks for Pedestrian Detection

Contact Info

Product

Resources

About