  Vehicular networks use Decentralized Congestion Control (DCC) mechanisms to
operate effectively, but this mechanism may introduce queuing delays. Freshness
of Cooperative Awareness Messages (CAMs) is critical for their usefulness. In
this letter we explore how the presence of other types of traffic additional to
CAMs, even with lower priorities, has an impact on the freshness of CAM
messages due to DCC queuing. Finally, we propose Generate-on-Time (GoT), which
is a simple mechanism that reduces DCC queuing delays for CAM messages without
introducing any downside in other performance metrics.
