Here is that Kansas State Statute on the matter:
8-1530
Chapter 8.--AUTOMOBILES AND OTHER VEHICLES
Article 15.--UNIFORM ACT REGULATING TRAFFIC; RULES OF THE ROAD
8-1530. Duty of driver upon approach of authorized emergency vehicle. (a) Upon the immediate approach of an authorized emergency vehicle making use of an audible signal meeting the requirements of subsection (d) of K.S.A. 8-1738, and amendments thereto, and visual signals meeting the requirements of K.S.A. 8-1720, and amendments thereto, or of a police vehicle properly and lawfully making use of an audible signal only, the driver of every other vehicle shall do the following unless otherwise directed by a police officer:
(1) Yield the right-of-way;
(2) immediately drive to a position parallel to and as close as possible to the right-hand edge or curb of the roadway clear of any intersection; and
(3) stop and remain in such position until the authorized emergency vehicle has passed.
(b) The driver of a motor vehicle upon approaching a stationary authorized emergency vehicle, when the authorized emergency vehicle is making use of visual signals meeting the requirements of K.S.A. 8-1720, and amendments thereto, or subsection (d) of K.S.A. 8-1722, and amendments thereto, shall do either of the following:
(1) If the driver of the motor vehicle is traveling on a highway that consists of at least two lanes that carry traffic in the same direction of travel as that of the driver's motor vehicle, the driver shall proceed with due caution and, if possible and with due regard to the road, weather and traffic conditions, shall change lanes into a lane that is not adjacent to that of the stationary authorized emergency vehicle; or
(2) if the driver is not traveling on a highway of a type described in paragraph (1), or if the driver is traveling on a highway of that type but it is not possible to change lanes or if to do so would be unsafe, the driver shall proceed with due caution, reduce the speed of the motor vehicle and maintain a safe speed for the road, weather and traffic conditions.
(c) From and after the effective date of this act and prior to July 1, 2001, a law enforcement officer shall issue a warning citation to anyone violating the provisions of subsection (b).
(d) This section shall not operate to relieve the driver of an authorized emergency vehicle from the duty to drive with due regard for the safety of all persons using the highway.
History: L. 1974, ch. 33, § 8-1530; L. 2000, ch. 179, § 20; July 1.
Now, I should state that I've been a responder in an emergency vehicle on many occasions and I've never seen a real need for drivers in the opposite lane to clear the way for me. I personally find that it only causes more confusion and increases the risk of drivers causing yet another accident. Traffic in the opposing lane will also pass by much faster, allowing for space to pass a vehicle in front of me if necessary. I have been in a couple of life or death circumstances as a responder and have always put my safety and the public safety ahead of the victim. Some may balk at that statement, but one person's life isn't worth the loss of mine or other innocents along the way, it does no one any good.