Dynamic Occlusion Modeling and Clearance Control of the Visual Field of Curved Highway Roadside Landscape
Round 1
Reviewer 1 Report
This paper has a novel starting point and strong practicability. And the argument formula is detailed, illustrated, and readable. However, there are still the following problems to be improved:
1. The resolution of the pictures in this article are too low, please increase the resolution.
2. The research contents mentioned in lines 29-44 have weak correlation, so please list the relevant literatures and summarize the existing research status and research problems.
3. There are few references in related research fields in recent years, please add them and make analysis and summary.
4. What is the data source used in this article, please explain it.
5. In the analysis, how to consider the size of the road bend, whether there is a fork in the road and other conditions.
6. Please specify the source or method for the determination of the values in Table.1.
7. When driving in a two-way lane, does the barrier in the middle of the lane affect the result?
8. Whether the method described in this article is universal and what are its limitations? Please state in conclusion.
9. Whether the text can be organized according to the format of 1. Introduction 2. Materials and Methods 3. Results 4. Discussion 6. Conclusions, the organization form is rather confusing now.
Author Response
This paper has a novel starting point and strong practicability. And the argument formula is detailed, illustrated, and readable. However, there are still the following problems to be improved:
- The resolution of the pictures in this article are too low, please increase the resolution.
The resolution of all pictures in the article has been improved。
- The research contents mentioned in lines 29-44 have weak correlation, so please list the relevant literatures and summarize the existing research status and research problems.
The article has been rearranged as follows:Many research results showed that an impressive highway roadside landscape might be beneficial for reducing traffic accident rates, the ratio of obstruction of the roadside landscape is an important element of a good roadside landscape. Ganguly et al [1] used the visual occlusion method to assess the visual needs of highway alignment and found that complex curves affected the driver's roadside visual needs. The studies by Jeong[2] et al. and MoK et al. [3] showed that a driver is likely to concentrate on driving by seeing a comfortable roadside landscape, whereas they feel confused and depressed by seeing a complex roadside landscape. Park et al [4] found that there was a clear correlation between roadside facility density and traffic accidents according the study of roadside tree spacing, pole density, etc. Lankathilake al [5] studied and found that roadside plants, structures and other areas in the curve area hinder the driving line of sight much more than straight lines.Qi et al [6] found that the obstructions on the roadside of the curve will have a significant impact on the average speed of the vehicle when the driver drives the truck through the curve through real vehicle test, and proposed that the side obstructions should be considered in the design of speed limit for curve sections. Xie [7]found highway landscape based on the environment of the prairie-highway has a significant impact on the driver's dynamic vision, such as saccade amplitude, fixation duration, etc from the real vehicle experiment . Huang et al. [8] studied the landscape pavement of emergency lane and its impact on driver's vision and driving safety．Zhang [9]proposed that the blocked roadside landscape would leave a hidden danger to traffic safety.
- There are few references in related research fields in recent years, please add them and make analysis and summary.
The new references have been added to the paper such as [1][4][5][6][7][8][9][13][14]
- What is the data source used in this article, please explain it.
The data source used in this article is survey and statistics of roadside landscape of high-risk sections in G4 and G60 of Hunan。The high-risk sections datas come from Hunan Expressway Network Risk Assessment Data from 2013 to 2015 (data from Hunan Provincial Department of Transportation)
- In the analysis, how to consider the size of the road bend, whether there is a fork in the road and other conditions.
In the model, the parameter R is the radius of the curve. The paper is on the side of the curve of the expressway, without considering the conditions of the fork in the road and other conditions.
- Please specify the source or method for the determination of the values in Table.1.
The values in Table.1 come from reference[15]、[16]and[17].
- When driving in a two-way lane, does the barrier in the middle of the lane affect the result?
The expressway is a separate lane.The barrier in the middle of the lane can't affect the result.
- Whether the method described in this article is universal and what are its limitations? Please state in conclusion.
The method described in this article is universal. The conclusion in the paper supplements:
The visual domain model of roadside landscape and the occluded judgment model have not considered the influence of longitudinal slope and transverse slope; In the future research, the road influencing factors of these expressways can be further explored according to the ideas of this paper.
- Whether the text can be organized according to the format of 1. Introduction 2. Materials and Methods 3. Results 4. Discussion 6. Conclusions, the organization form is rather confusing now.
The paper is organized according to the format of
- Question (Analysis of visual field occlusion by roadside landscape on high-risk curved highways)
- Build model (Visual field modeling of roadside landscape on a curved highway )
3 Model validation (Calculation of the occlusion of the visual field of the roadside landscape on a curved highway)
4.Application(Curved highway roadside landscape visual field antiblocking clearance control)
- Conclusions
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Interesting models, very technical but well explained!!! Need more discussion , the references can be improved! They need more references!!!!!
Author Response
Thanks! The new references have been added to the paper such as [1][4][5][6][7][8][9][13][14]
Author Response File: Author Response.pdf
