Intersection Magic has several pre-defined fields: Case id; Primary andCross Streets; Mile markers and Address locations;Distance from intersection; Date; and Time. These are referred to as "Base fields". The valid ranges for these fields is given in the lists below.
In addition, 40 user-defined fields may also be stored. These are numeric fields with a valid range of 0 to 254. If an existing collision database stores its data as text fields, a conversion to numbers will be necessary. Provisions for this conversion exist in IMW. In this case, a table is created for each field describing how to convert text to numbers. During program execution, the user will still see and use text values for all functions. The numbers are just for internal program use.
Free-form text is generally not useful to the program. For example, if data entry operators include values like "rr end; rear end; rear; r end;" it will be a challenge to prepare a working configuration. This is especially true for location information.
After identifying and populating the required and recommended fields, there will be plenty of user fields not yet populated. The person performing the analysis is the best person to make decisions about the remaining fields.
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