An Intelligent Broadcasting Algorithm for Early Warning Message Dissemination in VANETs

Table 2

Simulation parameters.

Parameter	Value
Radius of alert region	2~10 Km
Transmission range (R)	500 m
The length of a segment	100 m
Deceleration ()	4.0 m/s^2
Reaction time (T)	1 sec
Threshold value of TTC ()	2 sec
Threshold value of vehicle speed ()	75 Km/h
Traffic density (TD)	20~140 vehicles/Km
Maximum traffic density (maxTD)	160 vehicles/Km
Traffic deviation	(1.5 * maxTD)/TD
Maximum speed of vehicles	100 Km/h
Initial hop count value	2
Number of lanes	4
The broadcast probability in P-persistence	0.5
Transmission delay	20 ms/hop
Maximum waiting time	120 ms
Maximum segment waiting time	110 ms