Improving the Self-Explaining Performance of Czech National Roads
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44994575%3A_____%2F17%3AN0000049" target="_blank" >RIV/44994575:_____/17:N0000049 - isvavai.cz</a>
Result on the web
<a href="http://trrjournalonline.trb.org/doi/abs/10.3141/2635-08" target="_blank" >http://trrjournalonline.trb.org/doi/abs/10.3141/2635-08</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3141/2635-08" target="_blank" >10.3141/2635-08</a>
Alternative languages
Result language
angličtina
Original language name
Improving the Self-Explaining Performance of Czech National Roads
Original language description
Improving the road network according to principles of self-explaining roads is a promising way to increase the level of safety; however, there are no universal guidelines on how to measure and improve the self-explaining performance of the existing roads. In order to apply this approach on Czech national roads, the presented study was conducted, consisting of five steps: (1) automated segmentation into tangents and horizontal curves; (2) collection of floating car data and calculation of speed; (3) development of multivariate speed models for estimation of speed also on segments not covered by floating car data; (4) network-wide application of the models and evaluation of speed consistency, i.e. differences of speeds on tangents and following curves; (5) identification of substandard curves, categorization and proposal of optimization in terms of consistent placement of traffic control devices or reconstructions. The paper describes all the steps as well as several checks conducted along the way, such as comparison of profile speed and floating car speed, interpretation of regression models, and validation of predicted speed consistency against long-term average of crash frequency. The methodology was certified for use in practice and will be applied by the Czech national road agency.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20104 - Transport engineering
Result continuities
Project
<a href="/en/project/ED2.1.00%2F03.0064" target="_blank" >ED2.1.00/03.0064: Transport R&D Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Transportation Research Record: Journal of the Transportation Research Board
ISSN
0361-1981
e-ISSN
2169-4052
Volume of the periodical
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Issue of the periodical within the volume
2635
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
62-70
UT code for WoS article
000413520500009
EID of the result in the Scopus database
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