Distracted pedestrians is a good guess. I regularly see people on their smartphones crossing the street when they don’t have right of way (like no blinking walking sign). There is also a trend of a lot of pedestrians dying at night, for which there are various theories if you do a search for this topic. But more than 75% of pedestrian deaths are at night.

Note that road fatalities per capita is 85% of what it was 20 years ago, and it is similarly lower if you look at it on a per mile driven basis. Sales of consumer trucks is 150% of what it was 20 years ago, despite the reduction in fatalities over that time. So I don’t think we can really attribute deaths to trucks or SUVs.