I found my hazard analysis (required to have this laser here at work, where I use it for laser safety training).
Direct view of the beam, a 45mw 532nm laser with our beam characteristics (divergence, power, etc) has a nominal hazard zone to the human eye of about 200 feet. In other words, if you accidentally swept it across an intersection, anyone within 200 feet has the potential for eye injury.
If you catch a reflection off of a piece of glass, and roughly half the energy is diverted, you've still only cut that nominal hazard zone down to 100 feet.
Beyond 200 feet, the beam has diverged to the point that the human aversion response would protect the 'victim' through the blink reflex and reaction to the pain.