Should prohibition signs always be designed as bar-over-pictogram in traffic and non-traffic contexts?

Expert Evaluation of Traffic Signs: Conventional vs. Alternative Designs

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Fitting Linear Mixed-Effects Models Usinglme4

(2015) Douglas Bates et al.   Journal of Statistical Software

Colour-specific differences in attentional deployment for equiluminant pop-out colours: Evidence from lateralised potentials

(2013) Vincent Jetté Pomerleau et al.   INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY

Safety sign comprehension by students, adult workers and disabled persons with cerebral palsy

(2013) Emília Duarte et al.   SAFETY SCIENCE

A three-stage model summarizes product warning and environmental sign research

(2011) Kenneth R. Laughery et al.   SAFETY SCIENCE

Is red an innate or learned signal of aggression and intimidation?

(2009) Sarah R. Pryke   ANIMAL BEHAVIOUR