Preliminary communication
Modelling Free Flow Speed on Two-Lane Rural Highways in Bosnia and Herzegovina
Ivan Lovrić
; University of Mostar, Faculty of Civil Engineering
Dražen Cvitanić
; University of Split, Faculty of Civil Engineering, Architecture and Geodesy
Deana Breški
; University of Split, Faculty of Civil Engineering, Architecture and Geodesy
Abstract
Free flow speed is used as a parameter in transportation planning and capacity analysis models, as well as speed-flow diagrams. Many of these models suggest estimating free flow speed according to measurements from similar highways, which is not a practical method for use in B&H. This paper first discusses problems with using these methodologies in conditions prevailing in B&H and then presents a free flow speed evaluation model developed from a comprehensive field survey conducted on nine homogeneous sections of state and regional roads.
Keywords
free flow speed; rural roads; curvature characteristics; space mean speed; gradient
Hrčak ID:
124154
URI
Publication date:
27.4.2014.
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