This comprehensive Masters of Architecture thesis by Karen Kim looks at every aspect of stairway design and safety.
Extract from Abstract: This thesis examined contemporary practices in stairway design and their effects on the behavior of stair users. A review of the professional literature identified innovative stairway design features related to stair safety. Two potentially hazardous features were identified for assessment in the real world: glass stair treads and interactive sound. Observations of stair use were collected at five different stairways in public buildings. The chosen design features were present in three of these stairways, and the other two stairways were constructed in a conventional manner. The incidence of unsafe stair use and key behaviors on the stairways were documented and compared.