Interestingly, this confirms the common-sense wisdom that coasting, rather than braking, helps to even out traffic jams.<p>If you decrease the "comfortable deceleration" parameter all the way, you significantly increase the number of cars that can be handled without traffic jams.<p>Also, try turning T/s0/b all the way down, a all the way up, and then increase the density to about 75. Because the simulated drivers have very fast reaction times, the traffic oscillations propagate much faster than the cars are actually moving, creating some cool-looking spiral patterns.