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Learning Portfolio: Annotated Summary (Final)

Annotated summary:

Lee, J. H., Noh, K. S., Kim, J. M., & Choi, J. S. (2013). The Effects of Pavement Markings on High-risk Drivers' Speeds. International Journal of Highway Engineering, 15(1), 127-134. Retrieved from https://doi.org/10.7855/IJHE.2013.15.1.127



This research article studies the effects of pavement markings on drivers who are negligent on traffic regulations and partake in dangerous road activities. The study focuses on varying pavement markings used internationally that have been known to reduce driving speeds.

The various road markings introduced in the study include “Peripheral transverse lines, transverse lines and dragon teeth”. Lee’s team mentions that these markings showed a significant decrease in average driving velocities after implementation (as cited in Katz (2004))

The research article performed a study with two stages. The first stage was a questionnaire to determine a driver’s negligence towards traffic laws and engagement in dangerous road activities.

The second stage of the study was tested their driving conduct on roads, with and without pavement markings. The study showed that Dragons Teeth were the most effective in decreasing average driving velocity, for drivers who are likely to disobey traffic regulations or engage in dangerous road activities. On the other hand, peripheral transverse lines showed to be the most effective in reducing average velocity for drivers who obey traffic regulations and do not partake in dangerous road activities.

The study concluded that dragon’s teeth and peripheral transverse lines were most effective in reducing speed. It suggests that additional research is needed to provide more data on the success of the pavement markings, as drivers may be too comfortable to pavement markings and develop a negligence towards it in the long run. Additionally, the authors also indicated that “colour contrasts” can be looked into in a future study.

This research article provided a good insight on the effects of dragon’s teeth markings on motorists, as proposed in our research project. Furthermore, the indication that using colour to captivate motorists is a measure that our research project is looking towards, in addition to implementing traffic calming markings.

Commented on Jamie's, Thoufeek's and Tha Zin's blog.

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