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International Journal of Interdisciplinary Research

Table 1 Trim characteristics (%Y and chromaticity coordinates at illumination D65 and 45/0 geometry with 2° standard observer and a black underlay) and conspicuity measures (person detection distance, peripheral person detection angle, and peripheral color recognition angle) of trims 1–8 (study 1) and trims 1–10 (study 2)

From: Firefighter daytime visibility: trim properties and conspicuity

Trim

%Y

x

y

Person detection distance in meters (study 1)

Peripheral person detection in degrees (study 2)

Peripheral color recognition in degrees (study 2)

1: Solid fl. lime yellow 1a

119.26

.3959

.5445

303.51 (63.93)

25.70 (7.37)

15.00 (7.44)

2: Solid fl. orange-reda

54.16

.6085

.3487

263.87 (59.28)

25.75 (6.96)

10.25 (4.90)

3: Segmented fl. lime yellowa

88.79

.3942

.5259

301.18 (60.59)

24.27 (7.22)

11.25 (6.71)

4: Segmented fl. orange-reda

52.16

.5560

.3723

273.66 (58.57)

25.35 (8.03)

10.40 (6.03)

5: Solid fl. lime yellow 2a

79.71

.4020

.5618

286.57 (71.12)

26.06 (8.57)

14.91 (7.22)

6: Solid fl. lime yellow, filter 1a

104.29

.4062

.5472

286.85 (69.49)

24.50 (7.20)

12.18 (5.73)

7: Solid fl. lime yellow, filter 2

65.3

.3998

.5439

268.85 (134.14)

24.67 (7.57)

10.03 (6.12)

8: Blank

25.25

.3863

.3788

238.15 (54.49)

24.85 (7.47)

8.28 (5.20)

9: Solid fl. lime yellow, filter 3

30

.3942

.5469

 

24.81 (6.86)

5.24 (4.17)

10: Solid fl. lime yellow, dirty

58

.3923

.5223

24.32 (7.11)

9.67 (5.21)

  1. Standard deviations are indicated in parentheses
  2. aIndicates conformance to NFPA 1971 performance requirements. Filter descriptions for samples 6, 7, and 9 are found in “Study 1 trim stimuli and placement” section paragraph 5 (filters 1 and 2) and 2.2.4 paragraph 1 (filter 3)