Add that to deteriorating vision as you age
Agreeable as most foreign visitors tend to be at a more mature age. Other factors to consider, which I do, are.....
-poor road conditions
-poor lighting
-lack of emergency resources
-lack of emergency facilities
-weather patterns
-intoxicated operators
-irresponsible operators
Other factors may be added, but combine them with operating a vehicle under the cover of darkness, and the results are not favourable to any person, much less a foreigner. It is much safer to operate said vehicle during natural daylight hours, as most Dominicans choose to do.