,,ii  #aaith ,,congress  #ast ,session  
,s4 #cace  ,,in ,,the ,,senate ,,of     
,,the ,,united ,,states  ,november #f1  
#bjbe ,mr4 ,sullivan 7for himself and   
,ms4 ,lummis7 introduced the following  
bill2 which was read twice and referred 
to the ,committee on ,environment and   
,public ,works  ,a ,,bill  ,to require  
the ,administrator of the ,environmental
 ,protection ,agency to authorize       
manufacturers of certain vehicles to    
suspend engine derate or shutdown       
functions in prolonged cold weather     
conditions1 and for other purposes4  #a4
  ,short title  ,this ,act may be cited 
as the ,cold ,weather ,diesel           
,reliability ,act of #bjbe4  #b4        
,findings  ,congress finds that-- 7#a7  
diesel vehicles are vital for critical  
transportation and emergency services in
 cold weather regions2  7#b7 in rural   
regions with prolonged freezing         
conditions1 diesel exhaust fluid        
storage1 supply1 and system             
functionality are frequently unreliable 

and logistically impractical on a       
year-round basis2  7#c7 automatic engine
 shutdowns and power reductions due to  
emissions control malfunctions in       
extreme cold pose serious1              
life-threatening risks2 and  7#d7       
emissions safeguards under the ,clean   
,air ,act 7#db ,u4,s4,c4 #gdja et seq47 
were never intended to jeopardize human 
safety or impede critical mobility4  #c4
  ,definitions  ,in this ,act3 7#a7     
,administrator ,the term ,administrator 
means the ,administrator of the         
,environmental ,protection ,agency4     
7#b7  ,covered manufacturer  ,the term  
covered manufacturer means the          
manufacturer 7as defined in section #baf
 of the ,clean ,air ,act 7#db ,u4,s4,c4 
#geej77 of a covered vehicle or an      
engine of a covered vehicle4  7#c7      
,covered vehicle  ,the term covered     
vehicle means an on-highway diesel      
vehicle or nonroad diesel equipment4    
#d4  ,diesel engine emissions relief in 
cold weather regions  7a7  ,cold weather

 sensor mitigation measures  ,not later 
than #ahj days after the date of        
enactment of this ,act1 the             
,administrator shall revise any         
applicable regulation under the ,clean  
,air ,act 7#db ,u4,s4,c4 #gdja et seq47 
that applies to covered vehicles or     
engines used in covered vehicles to     
authorize covered manufacturers to      
suspend inducement-related engine derate
 or shutdown functions that are         
triggered by emissions control system   
faults when ambient temperatures are at 
or below zero degrees ,centigrade and to
 specify that no party other than a     
covered manufacturer shall suspend those
 inducement-related derate or shutdown  
functions1 subject to the conditions    
that--  7#a7 the engine returns to      
normal emission control operation1      
including inducement enforcement1 once  
ambient temperatures rise above zero    
degrees ,centigrade2 and  7#b7 continued
 maximum engine performance when ambient
 temperatures are at or below zero      

degrees ,centigrade is necessary to     
prevent occupational danger1 equipment  
failure1 or loss of essential           
transportation functionality in remote  
areas with limited roadside support or  
emergency communications access4  7b7   
,relief to regions with prolonged       
freezing conditions  7#a7  ,in general  
,not later than #ahj days after the date
 of enactment of this ,act1 the         
,administrator shall revise any         
applicable regulation under the ,clean  
,air ,act 7#db ,u4,s4,c4 #gdja et seq47 
to grant a year-round exemption from    
diesel exhaust fluid system requirements
 any covered vehicle that--  7,a7 is    
primarily operated north of #ei degrees 
north latitude1 as demonstrated by      
documentation of commercial operation1  
domicile location1 or maintenance and   
dispatch records2 or  7,b7 encounters   
operational or logistical conditions    
characterized by prolonged ambient      
temperatures that--  7i7 are below the  
freezing point of diesel exhaust fluid2 

or  7ii7 otherwise make the use of the  
diesel exhaust fluid system impractical4
  7#b7  ,scope of relief  ,in carrying  
out paragraph 7#a71 the ,administrator  
shall grant to a covered vehicle        
described in subparagraph 7,a7 or 7,b7  
of that paragraph an exemption from any 
requirement to include an engine derate 
or shutdown function that is triggered  
by the absence1 degradation1            
malfunction1 or fault of a diesel       
exhaust fluid system1 including any     
associated sensors or electronic control
 modules4  #e4  ,rule of construction   
,nothing in this ,act waives compliance 
with any emissions standard under the   
,clean ,air ,act 7#db ,u4,s4,c4 #gdja et
 seq47 outside of--  7#a7 the temporary 
cold-weather operational mode authorized
 under section #d7;a72 and  7#b7 the    
exemption from diesel exhaust fluid     
system requirements under section       
#d7;b74