I do a lot of work and on a lot of busy locations and will always use them as I fear a claim. I use cones to shepherd the people towards the ramps, you would not believe the trouble people go to, not to step foot on the ramps. I have often thought of videoing it as some go to extremes, they will take pushchairs out into busy traffic to avoid the ramps , even move the cones out of the way to climb over the hoses.
I think that in this day and age you need to demonstrate that other people's welfare is one of your considerations and as an essential piece of equipment ramps should have their place on your vehicles as anything else that is needed has.
Peter
www.carpetcleaningcardiff.com