01557781

Component

Several studies, such as design consistency evaluation and determination of road homogeneous segments are based on evaluating the operating speed variation along the road segment. Although operating speeds can be accurately estimated by means of operating speed models, in some cases their use is limited. One example is consistency evaluation, in which drivers’ expectancies cannot be connected to the operating speed itself. Conversely, expectancies should be more an average value along some distance before each station. The new inertial consistency model reflect the reality in a better way, since it merges the operating speed variations before each geometric feature. However, there is little knowledge about which distance should be used to estimate the average operating speed as the inertial operating speed. This paper presents an experimental way to accurately determine the best distance to consider in those studies. It is based on the behavior and perceptions provided by 28 volunteers that drove a rural road, 31 km long, using their own vehicles. The proposed integration distance of 750 m can be used for both consistency and homogeneous road segments analysis.

This paper was sponsored by TRB committee AHB65 Operational Effects of Geometrics.

01550057

15-4079

English

17p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; Photos; References

Behavior; Distance; Drivers; Geometric segments; Highways; Operating speed

Highways; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2015 Paper #15-4079

TRIS, TRB, ATRI

Dec 30 2014 1:20PM