Degradation of retro-reflectivity of thermoplastic pavement markings on trunk roads in Ghana

Autor: Daniel Atuah Obeng, Victor Owusu, Yaw A. Tuffour
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Transportation Engineering, Vol 5, Iss , Pp 100082- (2021)
Druh dokumentu: article
ISSN: 2666-691X
DOI: 10.1016/j.treng.2021.100082
Popis: Retro-reflective thermoplastic pavement markings enhance roadway visibility at night and help avoid lane-departure crashes. Markings decay in retro-reflectivity, due to material degradation over time and must be remarked to restore marking visibility. However, road agencies lack data and information on how the material degrades to permit effective management of re-marking interventions. Thus, thermoplastic pavement markings were installed on trunk roads in 3 eco-climatic zones and their retro-reflectivity monitored over time to establish rate of degradation. Retro-reflectivity at any time since marking installation was characterized by a multiple linear function involving initial retro-reflectivity and time. The rate of retro-reflectivity loss was the same for the Coastal Savanna and Forest zones (0.15mcd/m2/lux/day) but significantly different from that for the Northern Savanna zone (0.267mcd/m2/lux/day) at 5% significance level (p
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