Ziedonis Lazda, Juris Smirnovs - Impact of Permitted Driving Speed on the Design of Urban Street Network in Latvia (Vol VI, No 4)

Vilnius Gediminas Technical UniversityRiga Technical UniversityTallinn University of TechnologyBaltic Road Association

 

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ISSN 1822-427X print
ISSN 1822-4288 online
 

 

 
 

"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2011, Vol VI, No 4, p. 283-288


Ziedonis Lazda, Juris Smirnovs

Impact of Permitted Driving Speed on the Design of Urban Street Network in Latvia

DOI: 10.3846/bjrbe.2011.36
 
Today, an increasing number of necessary infrastructural measures is encountered the purpose of which is to assist in managing the traffic speed thus forming the most important part in speed management policies. This paper reviews the choice of permitted driving speed depending on the defined street category. The existing norms that define road functions and categories for the urban street network in Latvia are evaluated. This paper stresses the need to review the functional classification of the road network with specific attention paid to the importance of each road type and their influence on the drivers’ choice of adequate driving speed. A practical study on the efficiency of the chosen road profile (number of lanes, median, etc.) and design parametres (width of driving lanes, longitudinal curvature radius, horizontal curvature radius, etc) in the existing street network has been performed.
 
Keywords: road functions, road categories, permitted driving speed, road profile, design parameters.

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