Why do some trains SPAD--- others don't?

[davesnow]

It has been my experience recently that the only locos on my route that SPAD (Signal Passed at Danger) are SD-40's. My Dash 9's, SD70's, Steam locos don't. Anyone know why that might be?

 

[Dermmy]

Compare the enginespecs, paricularly the maxdecel value. Also train weight plays a part, are your SD40s overloaded...

 

[davesnow]

Thanks once again, Derrmy! That Maxdecel was the culprit. Those locos that Spaded had theirs set to 9000... I changed it to 95000 and--- No more SPADDING!!