Public Transport And A Few Cars During A Traffic Regulated Day In Barcelona. Public Transport And A Few Cars In This Top View During A Traffic Regulated Day In Barcelona To Control And Avoid High Levels Of Pollution And Test New Traffic Regulations Or Laws In Main Cities Around Spain.

KEYWORDS

air around asphalt automobile avoid background barcelona bus car carbon cars cities city control dioxide fine gasoline high lanes laws levels light main motorbike mulct ozone pollution polution public regulated regulation regulations road safety smoke spain standards taxi test traffic transport transportation van view