It is understood that the road development is 'more than' (mozna napisac 'extremely') important, but whether reducing the width of the roadway for bike lines is favorable seems to be arguable.
It is worth bearing in 'ming' (ortog) that 50% of 'bikes' (tutaj l. poj) accidents and injuries or even deaths are caused by 'the' (zamiast 'the' napisz 'car') drivers.
There 'has been' (zly czas, tutaj IS) also another advantage of having the bike line 'presented by' (nie, tego nie masz na mysli, o czym myslisz to 'dedicated to) the cyclists. 'Supposingly' (zle slowo, tutaj 'supposing') the road traffic is heavy.
However, there are drivers who believe that the reduced road would cause a slowdown of' shifting around' (tego nie rozumiem). Due to the fact that cars 'will ought' (nie moga byc 2 modale obok siebie, tutaj 'will be forced) to drive slower(,) (nie potrzeba przecinka, wystarczy 'and') the time of driving will be elongated.
As long as bikers want to 'drive' (lepiej slowo 'cycle') recreationaly bike lines should be created only in the suburbs.
In conclusion, bikers need safety 'as well as' (nie, tutaj wystarczy 'and') 'cars'' (car) drivers need 'fastness' (zle slowo, 'speed). My belief is that a survey should be done before any further actions (generalnie dodajemy na koncu...are taken).
Zamiast 'bikers' to lepiej uzyc slowo 'cyclists'.