GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Mobility and traffic research  (2)
Material
Publisher
Language
Years
FID
  • Mobility and traffic research  (2)
  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2008
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 2068, No. 1 ( 2008-01), p. 109-118
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 2068, No. 1 ( 2008-01), p. 109-118
    Abstract: Hydroplaning is known to be a major cause of wet-weather road accidents. The risk of hydroplaning in wet-weather driving is a function of the depth of surface water, pavement texture properties, and tire characteristics. With the aim to improve and ensure wet-weather driving safety, extensive experimental studies have been conducted by researchers to understand how tire characteristics (in particular, tire tread depth), would affect vehicle hydroplaning risk. Rib tires have been commonly used for such experiments. Relationships derived experimentally by past researchers are available to estimate the effect of rib-tire tread depth on hydroplaning risk. However, such statistical relationships have limitations in their application range and transferability. They also do not provide detailed insights into the mechanism of hydroplaning. These limitations can be overcome through development of a theoretically derived analytical model. This paper presents an analytical simulation study that is based on the theory of hydrodynamics. The method of modeling using finite element techniques is described. Measured data from past experimental studies are used to validate the simulation model. The simulation model is applied to analyze the effect of tire tread depth on hydroplaning for different surface water depths. The effect of tire inflation pressure on the hydroplaning risk of rib tires is also examined. In addition, the effect of different rib tire designs in relation to the number of grooves is studied. This study demonstrates that the proposed model can be a useful analytical tool for evaluating the hydroplaning risk of wet-weather driving.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2008
    detail.hit.zdb_id: 2403378-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2007
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1994, No. 1 ( 2007-01), p. 101-109
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1994, No. 1 ( 2007-01), p. 101-109
    Abstract: With the rapid development of metro systems in large Asian cities, such as Hong Kong and Shanghai, China, local authorities are developing park-and-ride (P & R) schemes to encourage commuters to reach the cities’ central areas by transferring from private cars to metro at stations with P & R facilities. A network equilibrium formulation can be used to model P & R services in a multimodal transportation network with elastic demand. It is assumed that commuters can complete their journeys by three options: auto mode, walk–metro mode, and P & R mode. The proposed model simultaneously considered commuters’ travel choices on travel mode, route–path, and transfer point, as well as their parking choice behavior. The effects of elastic travel demand, together with passengers’ discomfort in metro vehicles, were explicitly incorporated. The resultant problem can be formulated as an equivalent variational inequality problem. Numerical results showed that the introduction of P & R schemes could bring a positive, neutral, or even negative social welfare increment, and its efficiency depends greatly on the parking charging level and the number of parking spaces supplied at the P & R site and in the urban central area, as well as the metro dispatching frequency and fare.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2007
    detail.hit.zdb_id: 2403378-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...