Research on the reasonable planting distance in central section of highway based on guiding the driving sight and anti-glare

doi:10.3969/j.issn.1000-2006.201809026

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2019, Vol. 43 ›› Issue (6): 181-187.doi: 10.3969/j.issn.1000-2006.201809026

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Research on the reasonable planting distance in central section of highway based on guiding the driving sight and anti-glare

FAN Yazhen¹(), WANG Lianggui², WANG Jieming¹^,^*(), XIANG Yanci¹, PENG Wengang¹, WANG Chenyang¹, LIU Bingyou¹

1. School of Architecture and Art Design, Hunan University of Science & Technology, Xiangtan 411100, China
2. College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037,China

Received:2018-09-26 Revised:2019-03-14 Online:2019-11-30 Published:2019-11-30
Contact: WANG Jieming E-mail:1598522847@qq.com;jiemingw@163.com

Abstract

Abstract:

【Objective】 In order to further improve highway traffic safety by meeting requirements for guiding driving sight and anti-glare, the aim of the present study was to determine reasonable planting distances for the central green belt of highways. 【Method】 A model for planting distance at different speed on straight and curved highway sections was constructed on the basis of guiding driving sight, drivers’ visual characteristics, and theHighway Engineering Technique Standard (JTG B01-2014), and a formula for planting distance was constructed on the basis of anti-glare, geometrical relationship, and Code for the Design of Traffic Safety Facilities on Highways (DB33/T 704-2013). Then, two sets of data were compared to determine a reasonable planting distance for the central green belt of highways. 【Result】 The best planting distances for optimizing plant guiding driving sight at 60, 80, 100 and 120 km/h, were 3.33, 4.44, 5.56, and 6.67 m, respectively, on straight sections of highway, and the best planting distances at 60, 80, 100 and 110 km/h, were 3.33, 4.44, 5.56 and 6.11 m on curved sections of highway. Meanwhile, the best planting distances for optimizing anti-glare were 2.45-17.14 m on straight sections of highway and 2.29-16.00 m on curved sections of highway. 【Conclusion】The best planting distances for meeting both requirements at 60, 80, 100 and 120 km/h were 2.45-3.33, 2.45-4.44, 2.45-5.56 and 2.45-6.67 m, respectively on straight sections of highway, and the best planting distances for meeting both requirements at 60, 80, 100 and 110 km/h were 2.29-3.33, 2.29-4.44, 2.29-5.56 and 2.29-6.11 m on curved sections of highway.

Key words: highway, plants in central section of expressway, planting distance, driving sight guidance, anti-glare

CLC Number:

S731.8

FAN Yazhen, WANG Lianggui, WANG Jieming, XIANG Yanci, PENG Wengang, WANG Chenyang, LIU Bingyou. Research on the reasonable planting distance in central section of highway based on guiding the driving sight and anti-glare[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2019, 43(6): 181-187.

Figures/Tables 5

Table 1

Fig.1

Table 2

Fig.2

Table 3

References 29

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V/(km·h^-1)	R/m	L'/m
60	1 500	31.4
80	2 500	43.6
100	4 000	62.8
110	4 700	65.6

D/m	L/m	L'/m
0.4	2.45	2.29
0.6	3.67	3.43
0.8	4.9	4.57
1.0	6.12	5.71
1.2	7.35	6.86
1.4	8.57	8.00
1.6	9.80	9.14
1.8	11.02	10.28
2.0	12.25	11.43
2.2	13.47	12.57
2.4	14.69	13.71
2.6	16.47	14.86
2.8	17.14	16.00

Research on the reasonable planting distance in central section of highway based on guiding the driving sight and anti-glare

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车速/(km·h^-1) speed	视野/(°) vision	注视距离/m rang of visibility
40	100	180
60	86	335
80	60	377
100	40	564
120	22	710