They both have to be balanced by the rider, and they're both ridden straddled.
2000000
Vietnam
20 million
Street motorcycles are motorcycles that are ridden only on roads and highways as opposed to on trails or "dirt." The all-terrain bikes are called dual sport and can go on both trails and streets, and dirt bikes can only go on trails, etc.
Someone who is bed ridden is someone who has to stay in bed for a period of time (mostly for medical reasons), for a certain goal.
Motorcycles are mostly used for transportation and enjoyment in today's society. In the past motorcycles were used as delivery vehicles. Some three wheel motorcycles were even used as an ice cream truck with a cooler on the back.
Human powered bikes/bicycles don't requre any permits or licenses to be ridden, but motorcycles and scooters do, if you take them into traffic.
Pocket bikes, also known as mini motorcycles are not designed to be ridden on public streets or highways.
The REPUBLIC of South Vietnam was a FREE country back then; just book a flight and go. There were tourists watching the war in South Vietnam in 1969, 1970, and 1971. Some of them were riding civilian motorcycles (not motor bikes-but big motorcycles) down the back roads.
Try Cuong motorcycles Hanoi ...email... cuongminsk@yahoo.com
Mostly motorbikes are used in Vietnam