--- a/trafficintelligence/ubc_utils.py	Mon Jun 18 22:50:59 2018 -0400
+++ b/trafficintelligence/ubc_utils.py	Tue Jun 19 10:04:52 2018 -0400
@@ -57,8 +57,8 @@
     by just copying the corresponding trajectory and velocity data
     from the inFilename, and saving the characteristics in objects (first line)
     into outFilename'''
-    infile = storage.openCheck(inFilename)
-    outfile = storage.openCheck(outFilename,'w')
+    infile = utils.openCheck(inFilename)
+    outfile = utils.openCheck(outFilename,'w')
 
     if (inFilename.find('features') >= 0) or (not infile) or (not outfile):
         return
@@ -86,8 +86,8 @@
 
 def modifyTrajectoryFile(modifyLines, filenameIn, filenameOut):
     '''Reads filenameIn, replaces the lines with the result of modifyLines and writes the result in filenameOut'''
-    fileIn = storage.openCheck(filenameIn, 'r', True)
-    fileOut = storage.openCheck(filenameOut, "w", True)
+    fileIn = utils.openCheck(filenameIn, 'r', True)
+    fileOut = utils.openCheck(filenameOut, "w", True)
 
     lines = storage.getLines(fileIn)
     trajNum = 0
@@ -106,8 +106,8 @@
 def copyTrajectoryFile(keepTrajectory, filenameIn, filenameOut):
     '''Reads filenameIn, keeps the trajectories for which the function keepTrajectory(trajNum, lines) is True
     and writes the result in filenameOut'''
-    fileIn = storage.openCheck(filenameIn, 'r', True)
-    fileOut = storage.openCheck(filenameOut, "w", True)
+    fileIn = utils.openCheck(filenameIn, 'r', True)
+    fileOut = utils.openCheck(filenameOut, "w", True)
 
     lines = storage.getLines(fileIn)
     trajNum = 0
@@ -125,7 +125,7 @@
 def loadTrajectories(filename, nObjects = -1):
     '''Loads trajectories'''
 
-    file = storage.openCheck(filename)
+    file = utils.openCheck(filename)
     if (not file):
         return []
 
@@ -177,7 +177,7 @@
     'Loads interactions from the old UBC traffic event format'
     from events import Interaction 
     from indicators import SeverityIndicator
-    file = storage.openCheck(filename)
+    file = utils.openCheck(filename)
     if (not file):
         return []
 
@@ -206,7 +206,7 @@
 def loadCollisionPoints(filename, nPoints = -1):
     '''Loads collision points and returns a dict
     with keys as a pair of the numbers of the two interacting objects'''
-    file = storage.openCheck(filename)
+    file = utils.openCheck(filename)
     if (not file):
         return []