Will speeding ever have consequences?
Ramming at speed and causing damage to another ship in the no fire zone is a criminal offense. Causing hull damage is a fine, destroying another ship is a bounty subject to lethal response by system authority. However, there are no direct consequences to speeding.
This was changed in Elite Dangerous 1.3 to reduce incidents of CMDRs flying heavy ships intentionally causing collisions with and destroying new CMDRs in lighter ships.