road vehicle
roadside area
roadside greenery
roadside tree
rock salt
rodent
rodent control
rodenticide
RoHS Directive
roof insulation
RoRo transport
Rotterdam Convention
Round Table
rubber
rubber tree
rubber waste
run-of-the-river power plant
running waters
runoff
rural area
rural development
rural infrastructure
rural mobility
rural population
rush-hour traffic
rushes
Russia
rust fungus
ruthenium
rye
