普通に考えて右ハンドルは事故率が高くて当然のような気がします。
狭い道が多くて比較的スピードを出さない道路(日本のような)ではあまり関係ないかもしれませんが、北米ではスピードが出るので一瞬見えにくかったりするだけで事故になりやすいというのもあると思います。
↓これによると、RHD (right hand vehicle = 右ハンドル)は、類似の左ハンドル車にくらべて事故率は40%高くなるそうです。初めて右ハンドル車を運転した人は、初めて左ハンドル車を運転した人に比べて68%早く事故に遭っているそうです。
現在、Transport canada に輸入できる年数の制限や輸入台数の制限を働きかけているようです。
また ICBC は右ハンドルを購入する時は危険度が増すことを認識するように呼び掛けています。
https://www.callkleinlawyers.com/full-disclosure/whats-right-hand-drive/#:~:text=According%20to%20the%20study%2C%20RHD,days%20for%20a%20LHD%20vehicle.
According to the study, RHD vehicles are 40 per cent more likely to get into a crash than a similar left-hand-drive vehicle. Furthermore, researchers found that the average time for a crash to occur after an owner first purchased an RHD vehicle was 223 days, 68 per cent sooner than the 705 days for a LHD vehicle.
Although there was no evidence in the study that suggested RHD vehicles offer less protection in a crash than built-for-Canada vehicles of similar age, BC officials have asked Transport Canada to increase the restriction period on import vehicles from 15 to 25 years, in an attempt to reduce the number of RHD vehicles entering the province.
There is no extra insurance premium for driving an RHD vehicle. However, ICBC is warning potential purchasers that they present greater risk, citing increased difficulty in seeing oncoming traffic when making a left turn and similar challenges when pulling away from the curb.