Yarra Trams has run what I understand from the media to be a successful campaign over a long period using a rhinoceros on a skateboard. The slogan goes something like, 'A tram can weigh as much as thirty rhinos and you wouldn't step in front of thirty rhinos'. I certainly wouldn't and nor would I deliberately step in front of a tram. However people do it all the time, with fortunately very few people being hit. Looking at tram workings from the under the tram would not be pleasant. Mobile telephones and portable music playing devices are causing pedestrians, especially the young, to become distracted by their devices.
Later edit: My figures are nonsense. See comments for correct figures.
Average weight of a Melbourne tram 2450 kg.
While anyone could pull my arithmetic to shreds, it is vaguely on the mark. At 4000kg, Melbourne's heaviest tram is still well short of the weight of thirty rhinos. So, I would suggest a tram equals more like ten rhinos, but it a moot point when one rhino is all it takes.
The campaign has recently been given a fillip with the addition of multi lingual advertising. Some people have been having fun working out the many different languages. Should you be a linguist, do have some fun with it.