Treibich, C.

fatality population income country traffic state number effect health road users accident vehicle sample safety variable table road traffic fatalities death crash study regression analysis increase population density share four-wheeler level two-wheeler quality motorization density result factor world injury urbanization road traffic crashes signi road safety fatality rate four-wheeler fatalities india middle income countries behavior group development information determinant capita signi ficant enforcement e ffect figure relationship column control infrastructure indian journal research alcohol 10.21 road traffic injuries statewise police expenditure mortality health infrastructure problem ficant speed health econ income countries middle world health organization driver observation census statewise ut road rule enforcement