Sökning: "trafikmodellering"

Hittade 3 uppsatser innehållade ordet trafikmodellering.

  1. 1. Validering av trafikmodeller med GPS-baserade probedata

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Trafik och väg

    Författare :Axel Persson; [2022]
    Nyckelord :GPS; Probedata; Trafikmodellering; Validering; Trafikplanering; Technology and Engineering;

    Sammanfattning : In traffic assignment, one of the key elements is the validation process. The validation allows the traffic planner to get an understanding of whether the model is working according to reality-based metrics, or if it must be improved. There are several different ways of collecting reality-based metrics, one these methods are called GPS probe data. LÄS MER

  3. 2. Modellering av miljözoners inverkan på luftkvalitet i centrala Uppsala

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Niklas Pedersen; [2019]
    Nyckelord :environmental zones; emission modelling; traffic simulation; air quality; PTV Vissim; Enviver; NOx; PM; miljözoner; emissionsmodellering; trafikmodellering; luftkvalitet; PTV Vissim; EnViver; kväveoxider; partiklar;

    Sammanfattning : In order to improve the air quality in Uppsala, a proposition to introduce one of two new emission zones (EZ), starting in the year 2020, has been proposed. In what is called Environment Zone Class 2 (EZ2), only cars that meet emission class Euro 5 and higher are allowed and in Environment Zone Class 3 (EZ3), only electric, fuel cell and gas vehicles are allowed. LÄS MER

  4. 3. Application of Poisson Regression on Traffic Safety

    Master-uppsats, KTH/Matematisk statistik

    Författare :Philip Nilsson; Sebastian Nilsson; [2015]
    Nyckelord :Applied traffic modeling; Poisson regression; Traffic fatality; Traffic safety; Tillämpad trafikmodellering; Poissonregression; Trafikdödlighet; Trafiksäkerhet;

    Sammanfattning : This study presents a model that explains the traffic fatality by exploring the Poisson regression model using two types of explanatory variables – referred to as internal and external factors. Internal factors contain variables closely linked to traffic safety, such as speed limits and belt usage (Strandroth et al. LÄS MER