I was wondering what other cities/counties, etc are doing for traffic collision mapping of accidents. I have noticed their are three basic schools of thought on how to collect the data, they are:
1. Snap the accident point to the nearest intersection.
2. Have police officers take Latitude/Longitude at the point of the accident.
3. Record them as Primary Street and Distance from Cross Street.
We currently use method 3, they are entered by a police officer into an Access database. The database has fields for "at intersection" true/false, �??distance�?� from intersection in feet and �??direction�?� from intersection.
We export out a table and run an Avenue code that will place the points. If it is at the intersection a point is placed where the street centerline crosses. If it is a distance from the intersection the point is placed on the �??primary�?� street a certain distance and direction (N,E,S,W) from the intersection on the �??secondary street�?� .
I'm trying to find a modern way to do this. I am not a python expert, so I haven't had luck doing it that way. I was even thinking of designing a flex app and giving the police officers access to it to place their points. What method are you using?