Further research into car theft might also consider the nature and composition of vehicle markets.
However, other parameters which affect the divers' decision such as vehicle type, geometry, and composition of vehicle type were not considered in these studies.
Concerning the environmental impact of the traffic flow during the selected observation period, some hypotheses about the change in the composition of vehicle fleet and the traffic volume are needed.
The aim of our research is to find a method to control the quantity of traffic pollutants emission through adjusting and controlling the composition of vehicle types, and then the traffic volume and vehicle's running speed indirectly.
Four groups of basic safety indicators were considered, which refer to: policy performance (road safety programmes), final road safety outcomes (fatality rates, scope of traffic injury), intermediate outcomes (wearing rates of seat belts, crashworthiness and composition of vehicle fleet, alcohol-impaired driving), and background characteristics of countries (motorization level, population density).
We employed a combination of principal component analysis (PCA) and partial least-squares regression (PLS; also known as projection to latent structures) to evaluate the relationships between chemical composition of vehicle exhaust and toxicity.
Variables related to driver behaviour (e.g. the distributions of aggressiveness and awareness), compositions of vehicles, driver's familiarity, etc. were examined.
Speeds and flows at entry of the roundabout depend on entry angle, width of the entry, composition of the vehicles, circulating flow, and flow rate.
This decrease is consistent with reduction in the benzene content of gasoline over this time period as well as a change in the composition of the vehicle fleet towards lower emission vehicles.
The number of new vehicles registered every year, the age composition of the vehicle fleet, the resulting Green House Gas GHGG) emissions and energy use costs are calculated depending on a set of parameters.
