Venezuela
In Venezuela taxis are mostly white with the exception of luxury ones usually found on airports and luxury hotels, which are black. In Venezuela there is not such thing as a taximeter, nor any other way to know the fare. Due to this, it is common to discuss with the driver the fare before getting inside the cab. They tend to mislead tourists when coming to the country (especially Caracas) because the city doesn't have a numerical system for the street, building nor houses, making almost impossible to navigate thru the city with just a map.
Read more about this topic: Taxicabs By Country