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Seasonal and Weather Effects on Older Drivers’ Trip Distances

  • Glenys A. Smith (a1), Michelle M. Porter (a1), Andrew W. Cull (a1), Barbara L. Mazer (a2), Anita M. Myers (a3), Gary Naglie (a4), Michel Bédard (a5), Holly A. Tuokko (a6), Brenda H. Vrkljan (a7), Isabelle Gélinas (a2), Shawn C. Marshall (a8) and Mark J. Rapoport (a9)...

Abstract

The purpose of this study was to determine if season or weather affected the objectively measured trip distances of older drivers (≥ 70 years; n = 279) at seven Canadian sites. During winter, for all trips taken, trip distance was 7 per cent shorter when controlling for site and whether the trip occurred during the day. In addition, for trips taken within city limits, trip distance was 1 per cent shorter during winter and 5 per cent longer during rain when compared to no precipitation when controlling for weather (or season respectively), time of day, and site. At night, trip distance was about 30 per cent longer when controlling for season and site (and weather), contrary to expectations. Together, these results suggest that older Canadian drivers alter their trip distances based on season, weather conditions, and time of day, although not always in the expected direction.

Le but de cette étude a été de déterminer si la saison ou la météo, mesurées objectivement, ont affecté les distances des trajets parcourus par les conducteurs âgés (≥ 70 ans, n = 279) à travers sept sites canadiens. Pendant l’hiver, pour tous les voyages effectués, la distance était de 7 pour cent plus court, lors du contrôle pour le site et si le voyage a eu lieu pendant la journée. En outre, pour les déplacements effectués dans les limites de la ville, la distance était de 1 pour cent plus courte en hiver et 5 pour cent plus en cas de pluie, par rapport à aucune précipitation, tout en contrôlant pour le temps (ou la saison, respectivement), le moment de la journée, et le site. La nuit, contrairement à toute attente, la distance des voyages était d’environ 30 pour cent plus, lors de la commande pour la saison et le site (et la météo). Pris ensemble, ces résultats suggèrent que les conducteurs canadiens âgés modifient leurs distances de déplacement basé sur la saison, les conditions météorologiques, et l’heure de la journée, mais pas toujours dans le sens attendu.

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Corresponding author

La correspondance et les demandes de tirés-à-part doivent être adressées à: / Correspondence and requests for offprints should be sent to: Michelle M. Porter, Ph.D. Faculty of Kinesiology and Recreation Management University of Manitoba Winnipeg, MB R3T 2N2 (michelle.porter@umanitoba.ca)

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