(a) The Traffic Division shall maintain a suitable record of all traffic accidents, warnings, arrests, convictions and complaints, in which the same shall be filed alphabetically under the name of the driver concerned.
(b) The Division shall study the cases of all the drivers charged with frequent or serious violations of the traffic laws or ordinances or frequently involved in traffic accidents, and shall attempt to discover the reasons therefor, and shall take whatever steps are lawful and reasonable to prevent further violations or accidents.
(c) The reports shall accumulate until a five-year period is covered and thereafter such records shall be maintained complete for the most recent five-year period. (1950 Code, p. 191.)