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In future research, you can try to expand the data set, such as road on traffic volume, speed limit value, the road width, shoulder height and the warning signs and so may significantly increase the explanatory power of the statistical model the accident.

In future studies, you can try to expand a dataset, such as the volume of road traffic, speed limits, road widths and shoulder height and warning signs are likely to be a significant increase in accidents in the explanatory power of the model.

In the next research, might the attempt expand the data set, like the path date volume of traffic, the regulating value, the road width, the road shoulder will highly show the symbol with the police and so on all possibly to be able obviously to increase the accident statistics model the explanation

In the future, you can try in the study to expand data sets, such as road traffic volume, speed-limit value, road, road shoulder width height and warning signs will increase significantly, may be explained by accident statistics models.

In future studies, you can try to expand a dataset, such as the volume of road traffic, speed limits, road widths and shoulder height and warning signs are likely to be a significant increase in accidents in the explanatory power of the model.