Analysis of the impact of traffic load degree on the passenger car equivalent factor for heavy vehicles at roundabout intersections

So far, in Polish design practice as well as in calculations conducted for traffic analysis purposes, constant values of passenger car equivalent factors for heavy vehicles have been used. The aim of this article is to analyze the impact of the degree of traffic load on the value of the passenger car equivalent factor for heavy vehicles at roundabout intersections. The results of current – preliminary – own research indicate that the value of the passenger car equivalent factor for heavy vehicles depends on the load of the roundabout cross-section. Depending on the degree of this load, the value of the passenger car equivalent factor for heavy vehicles ranges from 1.92 to 2.25 [-].The article is a continuation of the author’s work related to the analysis of the impact of various vehicle type groups on traffic conditions at roundabout intersections [12, 13].
Individual vehicle type groups are characterized by different static and dynamic characteristics. Vehicles that differ significantly in terms of construction are part of road traffic streams. (…)

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