Microscopic Congestion Detection Protocol in VANETs

Table 2

Transportation control domain in beacon message.

Content	Description
V_ID	Vehicle identifier
Session Time	Message generation time
Speed	Vehicle’s Speed (Read from odometer)
Direction	Vehicle’s Direction (Obtained from Navigator system)
Acceleration	Rate of change of Vehicle speed (Read from odometer)
Lane ID L_id	Lane identity of Highway
Position	Vehicle’s Position (GPS)
Road Type	Obtained from Transportation department