field: Fields describe a single aspect of each member of a table. A student record, for instance, might contain a last name field, a first name field, a date of birth field and so on. All records have exactly the same structure, so they contain the same fields.
Many jurisdictions require one or more bicycle lights to be fitted to bicycles ridden at night â generally a white light in the front and a red light at the back.
â¢ When used at nighttime, both tires of a bicycle must be equipped with retro-reflective sidewalls or reflectors. mounted on the spokes of each wheel. Spoke-mounted reflectors must be within 76 mm (3 inches) of the inside of. the rim and must be visible on each side of the wheel. The reflectors on the front wheel must be essentially color-. less or amber and the reflectors on the rear wheel must be amber or red.