We study a family of deterministic models for highway traffic flow whi
ch generalize cellular automaton rule 184. This family is parameterize
d by the speed limit m and another parameter k that represents a ''deg
ree of aggressiveness'' in driving, strictly related to the distance b
etween two consecutive cars. We compare two driving strategies with id
entical maximum throughput: ''conservative'' driving with high speed l
imit and ''aggressive'' driving with low speed limit. Those two strate
gies are evaluated in terms of accident probability. We also discuss f
undamental diagrams of generalized traffic rules and examine limitatio
ns of maximum achievable throughput. Possible modifications of the mod
el are considered.