peaks in traffic such as that caused by TV and radio phone-in competitions. Traffic measurement errors Measurement errors are caused by faults in equipment or constraints on equipment design. The following five errors are examples of some types of errors that can occur:Post-processing errors – These errors are generated by operators when analysing data that has been measuredPre-processing errors – These errors are generated by computers when compiling data for operatorsStatistical errors – These errors are caused by the averages in traffic measurements and by the fact that measurements are made from discrete samplesDatabase errors – These errors exist when errors are generated by faults in the storage of informationInterpretation errors'' – These errors occur when analysts misinterpret data References Teletraffic