When you are issued a traffic ticket, it is basically a citation or summons to appear in court.
Many people feel that if they sign the ticket, they are agreeing to the charges.
However, if you fail to sign the traffic ticket, the police officer has the authority and right to arrest you on the spot, and take you into custody.
Most traffic tickets can be handled by paying a fine, but if you fail to pay that fine, you will be required to appear in court.
When you sign the traffic ticket, you are not stating that you agree with the charges or the offense, you are only stating that you received the ticket and acknowledge that you must appear in court to fight the charges or pay the fine imposed.
It is best to sign the ticket, and if you plan on fighting the charges, contact an attorney who can plan out your defense.