“…Participants completed driving scenarios under four task conditions: (1) a baseline (no-texting) condition and conditions that included driving plus a secondary texting task using (2) a smartphone with manual input, (3) a smartphone with voice-to-text input, and (4) Google Glass with voice-to-text input. In addition to texting task measures, driving performance was assessed according to common metrics associated with driving safety, including the root mean square (RMS) of average absolute steering rate and standard deviation of lane position (SDLP) (Angell et al, 2006; Menhour, Lechner, & Charara, 2009; Regan, Lee, & Young, 2008). Additionally, the impact of texting on the orientation of visual attention was inferred via the mean following distance and brake reaction times to a lead “pace car” vehicle (Horrey et al, 2006; Hurts et al, 2011) and via video-based analysis of eyes-off-road glance durations.…”