it is odd, especially since the "info" section on the same page lists reasonable figures as being in the range of 0.8-2.5 m/s/s. even 0.8 makes a big difference

it is odd, especially since the "info" section on the same page lists reasonable figures as being in the range of 0.8-2.5 m/s/s. even 0.8 makes a big difference over 0.3. I can only assume they set the initial conditions to actually result in a traffic jam.