Cell Phone Conversation and Relative Crash Risk Update

Cell Phone Conversation and Relative Crash Risk Update

Richard A. Young (Driving Safety Consulting, LLC, USA)
DOI: 10.4018/978-1-5225-7598-6.ch056
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This chapter reviews key findings since 2014 that are relevant to estimating the relative crash risk of conversing via a cell phone during real-world and naturalistic driving in passenger vehicles. It updates Chapter 102 in the previous edition of this Encyclopedia. The objective is to determine if recent data confirms the conclusion that engaging in a cell phone conversation does not increase crash risk beyond that of driving without engaging in a cell phone conversation. In particular, a recent estimate is presented of the relative crash risk for cell phone conversation in the strategic highway research program 2 (SHRP2) naturalistic driving study data. This estimate is compared with five other estimates in a meta-analysis, which shows that cell phone conversation reduces crash risk (i.e., has a protective effect). A recent experimental study will also be discussed, which supports the hypothesis that driver self-regulation gives rise to the protective effect by compensating for the slight delays in event response times during cell phone conversation.
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A few brief definitions of basic terms will facilitate understanding the research updates reviewed in this chapter. This chapter uses the same definitions of terms as in the corresponding article in Chapter 102 in the previous edition of this Encyclopedia (Young, 2015a), except for the following additions and enhancements.

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