Determining the "best" drivers is subjective, but in 2026, Copenhagen, Denmark and Tokyo, Japan consistently top international safety and efficiency rankings. Copenhagen is often cited for having the most "harmonious" drivers due to a highly structured urban environment where cars, cyclists, and pedestrians coexist with minimal conflict and a very low accident rate per capita. Tokyo's drivers are world-renowned for their discipline, patience, and adherence to rules, which allows the city to maintain a remarkably high traffic flow despite its massive density. Conversely, cities with low congestion and high road quality, like Groningen in the Netherlands, are frequently ranked highest in the TomTom Traffic Index for driver "ease." When safety is the primary metric, Nordic cities like Oslo often win due to their "Vision Zero" initiatives, which have effectively eliminated road fatalities through a combination of driver education and clever road design.