Lane changing control to reduce traffic load effect on long-span bridges

Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges

“…The lesser percentage is adopted as a common truck percentage on a busy commercial route, while the greater percentage accounts for slow lanes of multi-lane carriageways, which typically have a greater truck percentage in the slow lane. Note also that such a high percentage is possible when the flow is low, typically in the early morning or at night [3,7,66,67]. Table 4 gives the dynamic capacity Q out for the mixed traffic conditions and the relevant heavyvehicle adjustment factors f hv for Q out , as well as the static capacity Q max (which can be attained only in uncongested traffic).…”

A pseudo-microsimulation approach for modelling congested traffic loading on long-span bridges

“…Further work has shown that the vehicle arrival process for congested traffic is different to free-flowing traffic. Car drivers tend to move to the fast lane during the breakdown from free-flowing to congested traffic, resulting in a higher percentage of truck platoons in congested traffic compared with free-flowing traffic (OBrien et al 2010, Caprani et al 2012a, Enright et al 2012. These truck platoons have a significant impact on traffic loading on long-span bridges (Enright et al 2012) and are hence important factors in the accurate calculation of traffic loading.…”