2, km; m--the study period, years; [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]--for the groups of road sections: AADT
during the study period, vpd; for the groups of junctions: AADT
of vehicles entering the junction during the study period, vpd; e--elasticity coefficient showing a degree of dependence of accident rate on the traffic volume, on the change in land purpose, etc.
Based on accounting data on stationary permanent traffic volume, AADT
is calculated applying the formula (Leduc 2008; Transport and Road Research.
Main data on groups and subgroups of homogenous road sections Subgroup Subgroup Road AADT
, length, vpd km 1.
76 13 Running Average AADT
Valid accidents number 2002-2006 years division by average AADT
2002-2006 years 1 189 0.
has the highest accident rate, though its length and AADT
are not the max, traffic volume, by the lowest signalized degree.
of passenger cars in the different group of roads (Accumulation and renewal of traffic data of the roads of national significance, 2008) is given in Fig.
Conformity of the coarse aggregate to the requirements of the Roads Specifications 2005 at AADT
> 3500 vpd Index Standard Requirement Dense graded AC SMA Lim Flakiness LVS EN [less [less 11 index 933-3 than or than or equal equal to] 15 to] 15 Resistance to LVS EN [less [less 25 fragmentation 1097-2 than or than or (Los Angeles) equal equal to] 20 to] 20 Magnesium LVS EN [less [less 6 sulphate 1367-2 than or than or test equal equal to] 18 to] 18 Filler LVS EN [less [less 2.
on state main road A4 Riga bypass (Baltezers-Saulkalne) 4.
In developing the MEPDG, it was recognized that the traditionally used traffic parameters such as AADT
or ESAL do not sufficiently recognize the differing effects of different axle loads and configurations on the pavement.
The researchers calculated the annual average daily traffic (AADT
) for each site and year as the average of the AADTs
of the segments within each site-year.
For each participant's residence, we calculated traffic density by summing the vehicle kilometers of travel (VKT) within a 300-m radius buffer by multiplying the AADT
by the length of the road segment for each road segment with AADT
values within the buffer, then dividing by the buffered area (0.
data was collected from the Department of Transportation, Commonwealth of Virginia.