Construction of exclusive motorcycle lanes is one of the measures to reduce motorcycle fatalities. Previous studies highlighted the risk of crashes with roadside objects and the tendency of motorcyclists to ride with excessive speed on exclusive motorcycle lanes. However, the risk of same-direction crashes on exclusive motorcycle lanes was not explored in much detail, especially on the impact of lane geometry and roadside configurations. This study used naturalistic riding data to determine the effects of lane width and roadside configurations on overtaking speed, lateral position and likelihood of comfortable overtaking on tangential sections of an exclusive motorcycle lane. Twenty-nine recruited motorcyclists rode the instrumented motorcycles along a 20km stretch of an exclusive motorcycle lane along a major urban road. Results revealed that both the roadside configurations and lane width significantly affect the participants' lateral position, while the roadside configurations only affects the overtaking speed. Participants' overtaking speeds and the front motorcycles' lateral position contribute significantly to the likelihood of comfortable overtaking in exclusive motorcycle lanes. The findings highlight the importance of micro-level behavior indicators in improving the design and overall safety of the exclusive motorcycle facility.

This study aims to determine the types of hazards and crash risks facing courier riders during delivery trips by recording the riding scenarios on their actual delivery route. A digital camera and a hands-free camera harness were used to hold the camera at the chest level to record the riding scenarios. Fifteen courier riders in the Klang Valley, Malaysia participated in the study. The final analysis reveals that a courier rider encounters 30 hazardous riding events and 5 near misses on average for each hour of delivery trips. Two-thirds of all hazardous riding events were instigated by road users, including the participants themselves. Interestingly, the participants' own riding behaviours contributed to almost a third (29%) of the total near misses. Obstruction of view was found to increase the odds of causing a near miss by 4.61 times compared to hazards related to driving behaviours of other motorists. Further, incidents related to lane changing or overtaking manoeuvres were found to have 7.81 times higher odds of causing a near miss compared to incidents related to braking or sudden stopping. The classification of hazards and risk assessment presented in this study should be seriously considered for better operation management and defensive driving training.

There is an urgent need to address motorcycle safety issues, especially in countries with high motorcycle ridership. This paper provides an overview of the research related to motorcycle movements in mixed traffic and their associated crash risk. It also highlights the factors that influence the risk of a crash from the perspective of motorcyclists and other motorists. The potential countermeasures to address the risk factors were also explored and suggestions were presented to improve the current status quo.

Summary:A pilot study used an instrumented motorcycle to evaluate riding performances of Malaysian learner riders graduating from rider training and licensing program. 105 participants were asked to ride the instrumented motorcycle along a predefined route (mean 8 KM) in a mixed traffic environment. Period of turn signal activation and deactivation, maneuvering speed and deceleration of participants at unsignalized T junctions were measured as riding performances. Significant differences between male and female riders in responding to oncoming vehicles at the junctions were observed. Significant effects of age were also found in period of turn signal activation and maneuvering speed. Implications for current rider training are discussed.

A pilot study was conducted to test the feasibility of using GPS- based action cameras in a large-scale naturalistic motorcycle riding data collection. A Garmin VIRB XE action camera was used to record riding behaviour data of four consenting participants from their place of residence to their place of work and other locations. Despite some limitations, the present study found that the methodology, data analysis approach and overall implementation plan were suitable for a larger scale study of this kind. Based on the recorded crash-relevant events, this study established a set of minimum required variables for a meaningful analysis of a naturalistic riding data. In addition, issues pertaining to data recording, data analysis and instrumentation were discussed and the potential solutions were suggested. Overall, this study strengthens the idea that a large-scale naturalistic motorcycle riding study can be conducted with lower financial cost, without substantially reducing the advantage of naturalistic data established by the previous large-scale studies.