Answer: Refusing a sobriety test can either be beneficial or detrimental to an individual, but it will depend on the circumstances surrounding the arrest. It is not illegal to refuse a sobriety test. In fact there are sometimes good reasons for an individual to refuse. However, in most cases the police officer will arrest an individual immediately upon their refusal.
If you are refusing a sobriety test you should do it politely. Simply state you would like to speak with an attorney before proceeding. Unfortunately, the officer will still arrest you and take you to the station. You will be booked and most likely have to give a blood alcohol test of your choice, urine, breath or blood.
Most people who refuse a breathalyzer feel that by the time they are actually forced to do the test the result will be lower than it would have been initially. This is due to the amount of time that passes bringing the individual to the station and waiting for them to be booked. Once an individual is booked they will have to succumb to an alcohol test. The problem with this theory is a rising blood alcohol content (BAC). This is possible if the person had just consumed drinks and then decided to drive.
Sometimes a defense attorney can use a rising BAC to defend the victim. Unfortunately, in some jurisdictions refusing a sobriety test in the field warrants a mandatory license suspension. There can also be other charges based on a refusal. Be sure to know all the laws in your jurisdiction prior to refusing a sobriety test.