In Maine we have permanent flashing signs on all interstates advising a maximum speed of 45 as opposed to the normal 65 in inclement weather, these can be turned on in specific locations depending on if the conditions are limited to a certain area, these are controlled by MaineDOT. We have no requirements for chains. Nathan Moulton Director, Rail Program MaineDOT, Office of Freight Transportation 16 State House Station Augusta, Maine 04333 Ph. (207) 624-3563 Fax (207) 624-3099 -----Original Message----- From: FHWA Freight Planning [mailto:[log in to unmask]] On Behalf Of Dale A Tabat Sent: Monday, November 29, 2010 4:28 PM To: [log in to unmask] Subject: Inclement weather speed limit reductions The Washington State DOT is interested in information on the following: 1) Are there any states that decrease the posted speed limit in the event of inclement weather (snow and ice in particular) and if so how is that accomplished? Is the speed limit decrease applied to specific road segments only or can it be incorporated across a state's entire highway system? Looking for related information for all traffic in general and freight trucks in particular. 2) Are there any urban areas that issue chain requirements for freight trucks during snow/ice conditions? Thank you for any input. Dale A Tabat Truck Freight Program and Policy Manager Washington State Departemnt of Transportation [log in to unmask]