Hedges can be low enough that pedestrians are visible. Trees typically have their branches well above car height. So nothing is obscured. Either way, it also reduces noise a bit.
That said, along highways (especially near urban areas), they’re usually much taller, with the roadside having a barrier. A cross section:
homes - mainwalk - bike path - hedge - barrier - road (and then possibly repeat but inversely).
You can connect the mainwalks and bike pathes with well-lit bridges underneath the road.
Hedges are also safer than concrete curbs in most cases as they don’t crack your skull open when you land on them in an accident and if someone drives their car into them they function like a cushion. Plus trees give shade in summer which is nice for everyone for several reasons.
Hedges can be low enough that pedestrians are visible. Trees typically have their branches well above car height. So nothing is obscured. Either way, it also reduces noise a bit.
That said, along highways (especially near urban areas), they’re usually much taller, with the roadside having a barrier. A cross section:
homes - mainwalk - bike path - hedge - barrier - road (and then possibly repeat but inversely).
You can connect the mainwalks and bike pathes with well-lit bridges underneath the road.
Re: @[email protected] , I’d also like to mention that some hedges can be pretty low-maintenance. Here are some that are especially for roads.
Top illustration is what I’m thinking of.
Hedges are also safer than concrete curbs in most cases as they don’t crack your skull open when you land on them in an accident and if someone drives their car into them they function like a cushion. Plus trees give shade in summer which is nice for everyone for several reasons.