motorcoach window dimensions and highway 
size and weight restrictions. 
(3) WINDOW GLAZING.— 
(A) RESEARCH AND TESTING.—The Sec-
retary shall conduct research and testing on ad-
vanced window glazing and securement to de-
termine the best method or methods for window 
glazing to prevent motorcoach occupant protec-
tion ejection. 
(B) STANDARDS.—Not later than 3 years 
after the date of enactment of this Act, the Sec-
retary shall revise window glazing standards for 
motorcoaches based on the results of such re-
search and testing and taking into account all 
motorcoach window dimensions and highway 
height and weight restrictions. 
(4) FIRE PREVENTION AND MITIGATION.— 
(A) RESEARCH AND TESTING.—The Sec-
retary shall conduct research and testing to de-
termine the most prevalent causes of motor-
coach fires and the best methods to prevent 
such fires and to mitigate the effect of such 
fires, both inside and outside the motorcoach. 
(B) STANDARDS.—Not later than 3 years 
after the date of enactment of this Act, the Sec-
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retary shall promulgate fire prevention and 
mitigation standards for motorcoaches, based 
on the results of the Secretary’s research and 
testing, taking into account motorcoach high-
way size and weight restrictions. 
(5) EMERGENCY EVACUATION DESIGN.— 
(A) RESEARCH AND TESTING.—The Sec-
retary shall conduct research and testing to de-
termine any necessary changes in motorcoach 
design standards, including windows and doors, 
to improve motorcoach emergency evacuation. 
(B) STANDARDS.—Not later than 3 years 
after the date of enactment of this Act, the Sec-
retary shall promulgate motorcoach emergency 
evacuation design standards, including— 
(i) window standards that enhance the 
use of windows for emergency evacuation 
to the maximum extent feasible, while not 
detracting from the window glazing stand-
ards to be promulgated under this sub-
section; and 
(ii) door standards, including design 
of the wheelchair lift door for emergency 
evacuation use. Such standards shall take 
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into account motorcoach highway size and 
weight restrictions. 
(6) GENERAL PROVISIONS.— 
(A) EFFECT
ON
STATE
AND
LOCAL 
LAWS.—Notwithstanding any provision of chap-
ter 301 of title 49, United States Code, a State 
or a political subdivision of a State may not 
adopt or enforce a law or regulation related to 
a motorcoach crash avoidance and occupant 
protection system prior to the effective date of 
the regulations promulgated pursuant to this 
subsection. 
(B) APPLICABILITY OF STANDARDS.—The 
standards prescribed under paragraphs (1) 
through (5) shall require motorcoaches manu-
factured after the last day of 3-year period be-
ginning on the date on which such standards 
are prescribed to be engineered and equipped to 
meet such standards. 
(C) LIMITATION
ON
STATUTORY
CON-
STRUCTION.—Nothing in this subsection or in 
the regulations prescribed pursuant to this sub-
section shall be construed as indicating an in-
tention by Congress to affect, change, or modify 
in any way the liability, if any, of a motorcoach 
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