SEPTA expects to buy vehicles with floors about 14 inches above the ground and buttons on the outside of cars to allow people with mobility issues to automatically extend a ramp. The lower floors should make boarding faster for everyone, not just people with physical limitations, but that won't be enough to make trolleys accessible. Trolley tracks don't typically bring the cars close enough to the curb to make ramp boarding easy. Streetscapes would have to change, and the report the DVRPC released Tuesday showed for the first time how that might look.