Vše

Co hledáte?

Vše
Projekty
Výsledky výzkumu
Subjekty

Rychlé hledání

  • Projekty podpořené TA ČR
  • Významné projekty
  • Projekty s nejvyšší státní podporou
  • Aktuálně běžící projekty

Chytré vyhledávání

  • Takto najdu konkrétní +slovo
  • Takto z výsledků -slovo zcela vynechám
  • “Takto můžu najít celou frázi”

Improving the Self-Explaining Performance of Czech National Roads

Identifikátory výsledku

  • Kód výsledku v 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>

  • Výsledek na webu

    <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>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Improving the Self-Explaining Performance of Czech National Roads

  • Popis výsledku v původním jazyce

    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.

  • Název v anglickém jazyce

    Improving the Self-Explaining Performance of Czech National Roads

  • Popis výsledku anglicky

    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.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20104 - Transport engineering

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/ED2.1.00%2F03.0064" target="_blank" >ED2.1.00/03.0064: Dopravní VaV centrum</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2017

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Transportation Research Record: Journal of the Transportation Research Board

  • ISSN

    0361-1981

  • e-ISSN

    2169-4052

  • Svazek periodika

  • Číslo periodika v rámci svazku

    2635

  • Stát vydavatele periodika

    US - Spojené státy americké

  • Počet stran výsledku

    9

  • Strana od-do

    62-70

  • Kód UT WoS článku

    000413520500009

  • EID výsledku v databázi Scopus