,,ii  #aagth ,,congress  #ast ,session  
,s4 #afei  ,,in ,,the ,,senate ,,of     
,,the ,,united ,,states  ,may #ag1      
#bjba,ms4 ,lummis 7for herself and ,mr4 
,kelly7 introduced the following bill2  
which was read twice and referred to the
 ,committee on ,environment and ,public 
,works  ,a ,,bill  ,to require the      
,secretary of ,transportation to carry  
out a highway cost allocation study1 and
 for other purposes4  #a4 ,short title  
,this ,act may be cited as the ,highway 
,cost ,allocation ,study ,act of #bjba4 
#b4 ,findings ,congress finds that--    
7#a7 the ,highway ,trust ,fund was      
designed to be self-sustaining by       
relying on user fees from motorists on  
the roadways2  7#b7 however1 since      
#bjjh1 the ,highway ,trust ,fund has    
experienced a revenue shortfall2  7#c7  
,congress has relied on transfers from  
the general fund of the ,treasury to    
supplement the ,highway ,trust ,fund    
since that time1 undermining the user   
fee model2  7#d7 the ,department of     

,transportation last completed a highway
 cost allocation study in #aiig2 and    
7#e7 the information gained from an     
updated highway cost allocation study   
could allow ,congress to equitably      
ensure the long-term solvency of the    
,highway ,trust ,fund4  #c4 ,highway    
cost allocation study  7a7 ,in general  
,not later than #d years after the date 
of enactment of this ,act1 the          
,secretary of ,transportation 7referred 
to in this section as the ,secretary71  
in coordination with ,state departments 
of transportation1 shall carry out a    
highway cost allocation study to        
determine the direct costs of highway   
use by various types of users4  7b7     
,inclusions ,the study under subsection 
7a7 shall include an examination of--   
7#a7 the ,federal costs occasioned in   
the design1 construction1               
rehabilitation1 and maintenance of      
,federal-aid highways by-- 7,a7 the use 
of vehicles of different dimensions1    
weights1 number of axles1 and other     

specifications2 and  7,b7 the frequency 
of those vehicles in the traffic stream2
 and  7#b7 the proportionate share of   
the costs described in paragraph 7#a7   
that are attributable to each class of  
highway users4  7c7 ,requirements ,in   
carrying out the study under subsection 
7a71 the ,secretary shall-- 7#a7 ensure 
that the study examines only direct     
,federal costs of highway use2  7#b7    
capture the various driving conditions  
in different geographic areas of the    
,united ,states2 and  7#c7 to the       
maximum extent practicable1 distinguish 
between costs directly occasioned by a  
highway user class and costs occasioned 
by all highway user classes4  7d7       
,reports  7#a7 ,interim reports ,not    
less frequently than annually during the
 period during which the ,secretary is  
carrying out the study under subsection 
7a71 the ,secretary shall submit to     
,congress an interim report on the      
progress of the study4  7#b7 ,final     
report ,on completion of the study under

 subsection 7a71 the ,secretary shall   
submit to ,congress a final report on   
the results of the study1 including the 
recommendations under subsection 7e74   
7e7 ,recommendations ,on completion of  
the study under subsection 7a71 the     
,secretary1 in coordination with the    
,secretary of the ,treasury1 shall      
develop recommendations for a set of    
revenue options to fully cover the costs
 occasioned by highway users1 including 
recommendations for-- 7#a7 changes to   
existing revenue streams2 and  7#b7 new 
revenue streams based on user fees4  7f7
 ,authorization of appropriations ,there
 are authorized to be appropriated to   
carry out this section such sums as are 
necessary4