Tucson bike-train plus MV-ped in unrelated fatal collisions

There were two transportation-related fatalities in Tucson this past weekend…

Man riding mountain bike struck and killed by train
A 20-year-old man was struck and killed by a train on Saturday (2/14/2015) afternoon. According to a Tucson Police Department press release Jorge A. Villalobos was riding a mountain bike north along the train tracks near the Rillito River and Interstate 10.
TPD said Villalobos began riding on the bridge crossing the Rillito River. A train was also heading north on the tracks…. — bicycletucson.com

This would be a non-traffic fatality; both because it wasn’t on the road (it was on a train bridge), and because train fatalities don’t count toward as traffic.

The pedestrian-MV fatality 2/13/2015 ~5pm appears to have been in a residential area near N Constitution and E Constitution Tuscon, in daylight so it’s not clear exactly what went wrong. Note that when no sidewalks are present, pedestrians are required (“when practicable”) to walk facing traffic  §28-796.  And are expected to jump out of the way. Really. Though that rarely comes up on a residential street. That’s not to say a driver striking a “wrong-way” ped is necessarily without any fault, drivers must always exercise “due care” and “control speed as necessary”. see §28-794 and §28-701.

Pedestrian, 70, dies a day after being hit
A pedestrian struck by a vehicle Friday on Tucson’s east side has died of her injuries. Sharon Garrison, 70, died Saturday at a hospital, police said. The collision occurred shortly before 5 p.m. Friday just west of North Constitution Drive and East Constitution Place, in the vicinity of North Houghton Road and East Fifth Street. Detectives determined Garrison and a friend were walking on the shoulder of the road, and the vehicle, traveling in the same direction, struck her at a bend in the road. The driver remained at the scene and cooperated with the investigation; no citations have been issued, police said. — tucson.com