Prima Facie Speed Zone investigation

What is the name of your state? Ohio

As described in 4511.21 of the Ohio Revised Code:

(H) Whenever the director determines upon the basis of a geometric and traffic characteristic study that any speed limit set forth in divisions (B)(1)(a) to (D) of this section is greater or less than is reasonable or safe under the conditions found to exist at any portion of a street or highway under the jurisdiction of the director, the director shall determine and declare a reasonable and safe prima-facie speed limit, which shall be effective when appropriate signs giving notice of it are erected at the location.

(I)(1) Except as provided in divisions (I)(2) and (K) of this section, whenever local authorities determine upon the basis of an engineering and traffic investigation that the speed permitted by divisions (B)(1)(a) to (D) of this section, on any part of a highway under their jurisdiction, is greater than is reasonable and safe under the conditions found to exist at such location, the local authorities may by resolution request the director to determine and declare a reasonable and safe prima-facie speed limit. Upon receipt of such request the director may determine and declare a reasonable and safe prima-facie speed limit at such location, and if the director does so, then such declared speed limit shall become effective only when appropriate signs giving notice thereof are erected at such location by the local authorities. The director may withdraw the declaration of a prima-facie speed limit whenever in the director's opinion the altered prima-facie speed becomes unreasonable. Upon such withdrawal, the declared prima-facie speed shall become ineffective and the signs relating thereto shall be immediately removed by the local authorities.


Who ( or what office ) is being referred to as "Director"?

How often does a engineering survey and traffic study need to be completed to support a prima facie speed limit? ( are they subject to statute of limitations?)

If I want to find out if an engineering survey and traffic study has been completed to support a speed zone, who would I contact?

If a prima facie speed zone has been established without the surveys and studies, can it be ruled illeagal?

If it is found to be illegal, can a class action suit be filed against a township in the names of all individuals who were ticketed and fined for violating the illegally posted speed zone?