<P> where t w (\ displaystyle t_ (w)) is the time the driver needs to work, to afford doing that specific travelled distance d (\ displaystyle d) using such car . </P> <P> James (an example), a common car owner and driver who takes his car to get to work, spends totally (standing and running costs) on his car an average of € 5000 per year . Considering James just uses his car to get to work and that one year has around 250 business days, James pays on average € 20 per working day to afford his car . Consider the James' average net salary is € 10 per hour; then James needs to work 2 hours per day just to afford his mean of transport to get to work, time strictly allocated to pay his car bills . </P> <P> If he lives 20 km away from his workplace and he gets there in half an hour, then he makes 40 km per day during one hour (round trip). His kinetic average speed would then be: </P> <Dl> <Dd> v k = 40 k m 1 h = 40 k m / h (\ displaystyle v_ (k) = (\ frac (40 \ km) (1 \ h)) = 40 \ km / h) </Dd> </Dl>

What type of infrastructure is compulsory for our society