[singlow]

Texas has a rule that you may not impede traffic by going below the limit.

http://codes.findlaw.com/tx/transportation-code/transp-sect-...

[criley2]

>except when reduced speed is necessary for safe operation or in compliance with law - See more at: http://codes.findlaw.com/tx/transportation-code/transp-sect-...

Trivial to argue that reduced speed is required for safe operation in this case, the research in this very article may be useful in that defense