TTI [ 1] provides a non-linear function relating roadway congestion index to the amount of travel occurring in congested conditions (Additional file 1, Table S2) that imposes a maximum of 50% of daily traffic occurring in congestion.
For PM2.5, temporal variability dominated spatial variability, but we observed a consistent linear decrease in concentrations from the roadways.
We confirmed the adequacy of a linear term to model age, distance from major roadway, and cumulative traffic using penalized spline regression in the R software package (Free Software Foundation, Boston, MA).
However, once we formally accounted for short-term temporal autocorrelation, we saw a significant linear decrease in PM2.5 concentrations between two major roadways and points 500 m away, albeit small in magnitude relative to background concentrations.
A linear mixed model analysis of braking profiles along the roadway before the pedestrian crossing revealed comparatively increased decelerations among distracted drivers, particularly during the initial 20 kph of deceleration.
The impact of tagged single-nucleotide polymorphisms (tagSNPs) and inferred haplotypes in 12 candidate genes (ACE, ADRB2, AGT, AGTR1, ALOX15, EDN1, GRK4, PTGS1, PTGS2, TLR4, VEGFA, and VEGFB) on the relationship between residential proximity to major roadways and LVM was analyzed using multiple linear regression, adjusting for multiple potential confounders.
The lateral resistance of the inclined roof bolts in a truss-bolt-supported roadway is examined using classical theory of a non-linear beam in bending.
The research aims to establish the correlation of roadway design features to operating speed in the Italian urban environment elaborating multiple-linear models able to predict the observed speed with these design variables as covariates.
We modeled residential distance to the nearest major roadway with five categories (< 100, 100 250, 250 500, 500 1,000, > 1,000 m) and tested for linear trend by assigning the median distance to each category and including the term as a continuous variable in regression models.
In part, roadway effects on asthma claims are found at large distances due to the limitations of a linear model.
