ABSTRACT
Congestion control in VANETs is currently a topic that has high research potential and vast industrial application. Methods for controlling the congestion in VANETs have been accomplished through different algorithms to ensure a faultless, disrupted connection between the vehicles. Significant strategies for clogging (congestion) management recommended for reducing VANET congestion are studied comparatively and discussed. The communication-based system for preventing collisions and controlling congestion monitors the congestion in the road network. Every technique used for congestion control in VANET has its advantages, drawbacks, and limitation. Although a wide range of strategies for control of congestion is suggested, the safety risks resulting from congestion must be addressed to ensure an effective VANET network. The fundamental problem in the collision control system is the preservation of communication on the MAC layer regardless of VANET properties. It leads to end-to-end transmission delays and failure of packet. The DCC system has been introduced to address these 454critical problems. Two channels are now reserved in WAVE for latent security use. This paper describes some important congestion control techniques with the evaluation of their results.
