Volume Counters are the most basic data recording units. They record a number for each vehicle or each axle (Axle sensors such as road tube) in a grand total sum or separated into intervals based on time (ie: 1 hour or 15 minute totals).

With the two types of counters (Total Volume Accumulators, and Interval Volume Accumulators) these units are used to collect the most basic of data that is valuable to every user.