Research in 1969 by J. J. Leeming showed countries driving on the left have a lower collision rate than countries driving on the right, although he acknowledged that the sample of left-hand rule countries he had to work with was small, and he was very careful not to claim that his results proved that the differences were due to the rule of the road. It has been suggested this is partly because humans are more commonly right-eye dominant than left-eye dominant. In left-hand traffic, the predominantly better-performing right eye is used to monitor oncoming traffic and the driver's wing mirror. In right-hand traffic, oncoming traffic and the driver's wing mirror are handled by the predominantly weaker left eye. In addition, it has been argued that left sided driving is safer for elderly people given the likelihood of their having visual attention deficits on the left side and the need at intersections to watch out for vehicles approaching on the near-side lane. Furthermore, in an RHD car with manual transmission, the driver maintains his or her right (i.e. in the majority of people, dominant) hand on the steering wheel at all times and uses their left hand to change gear.
Driving on the left is indeed safer
Some developed countries like the United States and Germany drive on the right, while other developed nations like Australia and the UK drive on the left. According to statistics, both the US and Germany experience more road fatalities than both Australia and UK. However, you do have to look at overall road conditions, such as total number of vehicles per kilometer, weather conditions, and driving behavior and geography.
Here is the statistical breakdown of road-related fatalities for every 100 million miles driven:
Australia – 38
UK – 50
US – 111
Germany – 85
www.greenslips.com.au/blog/398-is-drivin...an-on-the-right.html