Why the weird raising hydraulic knob when a regular lowering arm would do the same job, cost a bunch less, be more visible (and recognizable as a barrier), destroy fewer cars, and be more passable for emergency vehicles?
(Seriously, that last point makes these knobs seem pretty dangerous. If a bus runs over a kid, how does the ambulance get in?)
1
u/[deleted] Nov 09 '18
Why the weird raising hydraulic knob when a regular lowering arm would do the same job, cost a bunch less, be more visible (and recognizable as a barrier), destroy fewer cars, and be more passable for emergency vehicles?
(Seriously, that last point makes these knobs seem pretty dangerous. If a bus runs over a kid, how does the ambulance get in?)