diff --git a/onebusaway-gtfs-transformer/pom.xml b/onebusaway-gtfs-transformer/pom.xml
index 89c87dcd0..16f393287 100644
--- a/onebusaway-gtfs-transformer/pom.xml
+++ b/onebusaway-gtfs-transformer/pom.xml
@@ -12,26 +12,21 @@
     <version>1.3.101-SNAPSHOT</version>
   </parent>
 
-
   <dependencies>
-
     <dependency>
       <groupId>org.onebusaway</groupId>
       <artifactId>onebusaway-gtfs</artifactId>
       <version>1.3.101-SNAPSHOT</version>
     </dependency>
-
     <dependency>
       <groupId>org.onebusaway</groupId>
       <artifactId>onebusaway-collections</artifactId>
     </dependency>
-
     <dependency>
       <groupId>org.json</groupId>
       <artifactId>json</artifactId>
       <version>20090211</version>
     </dependency>
-
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
@@ -47,7 +42,6 @@
       <artifactId>mockito-core</artifactId>
       <scope>test</scope>
     </dependency>
-    
     <dependency>
       <groupId>com.kurtraschke</groupId>
       <artifactId>wsf-api</artifactId>
@@ -58,6 +52,18 @@
       <artifactId>onebusaway-cloud-noop</artifactId>
       <version>0.0.10</version>
     </dependency>
+	  <dependency>
+	    <groupId>javax.xml.bind</groupId>
+	    <artifactId>jaxb-api</artifactId>
+	  </dependency>
+	  <dependency>
+	    <groupId>com.sun.xml.bind</groupId>
+	    <artifactId>jaxb-core</artifactId>
+	  </dependency>
+	  <dependency>
+	    <groupId>com.sun.xml.bind</groupId>
+	    <artifactId>jaxb-impl</artifactId>
+	  </dependency>
   </dependencies>
 
   <build>
@@ -72,6 +78,15 @@
           </excludes>
         </configuration>
       </plugin>    
+
+  	  <plugin>
+		<groupId>org.apache.maven.plugins</groupId>
+		<artifactId>maven-compiler-plugin</artifactId>
+		<configuration>
+			<source>1.8</source>
+			<target>1.8</target>
+		</configuration>
+	  </plugin>
     </plugins>
   </build>
 
diff --git a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/impl/StopTimeArray.java b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/impl/StopTimeArray.java
index c574800ed..74567e5e7 100644
--- a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/impl/StopTimeArray.java
+++ b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/impl/StopTimeArray.java
@@ -62,13 +62,13 @@ public class StopTimeArray extends AbstractList<StopTime> {
 
   private BookingRule[] dropOffBookingRules = new BookingRule[0];
 
-  private int[] meanOffsets = new int[0];
+  private double[] meanOffsets = new double[0];
 
-  private int[] safeOffsets = new int[0];
+  private double[] safeOffsets = new double[0];
   
-  private int[] meanFactors = new int[0];
+  private double[] meanFactors = new double[0];
 
-  private int[] safeFactors = new int[0];
+  private double[] safeFactors = new double[0];
   
   public void trimToSize() {
     setLength(size);
@@ -396,42 +396,42 @@ public void setDropOffBookingRule(BookingRule dropOffBookingRule) {
     }
 
 	@Override
-	public int getMeanDurationFactor() {
+	public double getMeanDurationFactor() {
 		return meanOffsets[index];
 	}
 
 	@Override
-	public void setMeanDurationFactor(int meanDurationFactor) {
+	public void setMeanDurationFactor(double meanDurationFactor) {
 		meanFactors[index] = meanDurationFactor;		
 	}
 
 	@Override
-	public int getMeanDurationOffset() {
+	public double getMeanDurationOffset() {
 		return meanOffsets[index];
 	}
 
 	@Override
-	public void setMeanDurationOffset(int meanDurationOffset) {
+	public void setMeanDurationOffset(double meanDurationOffset) {
 		meanOffsets[index] = meanDurationOffset;
 	}
 
 	@Override
-	public int getSafeDurationFactor() {
+	public double getSafeDurationFactor() {
 		return safeFactors[index];
 	}
 
 	@Override
-	public void setSafeDurationFactor(int safeDurationFactor) {
+	public void setSafeDurationFactor(double safeDurationFactor) {
 		safeFactors[index] = safeDurationFactor;
 	}
 
 	@Override
-	public int getSafeDurationOffset() {
+	public double getSafeDurationOffset() {
 		return safeOffsets[index];
 	}
 
 	@Override
-	public void setSafeDurationOffset(int safeDurationOffset) {
+	public void setSafeDurationOffset(double safeDurationOffset) {
 		safeOffsets[index] = safeDurationOffset;
 	}
 
diff --git a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTime.java b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTime.java
index 3aa6621fb..7249d3fbe 100644
--- a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTime.java
+++ b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTime.java
@@ -136,16 +136,16 @@ public final class StopTime extends IdentityBean<Integer> implements
 
   // See https://github.com/MobilityData/gtfs-flex/blob/master/spec/reference.md
   @CsvField(optional = true, name = "mean_duration_factor")
-  private int meanDurationFactor = MISSING_VALUE;
+  private double meanDurationFactor = MISSING_VALUE;
 
-  @CsvField(optional = true, name = "mean_duration_offset", mapping = StopTimeFieldMappingFactory.class)
-  private int meanDurationOffset = MISSING_VALUE;
+  @CsvField(optional = true, name = "mean_duration_offset")
+  private double meanDurationOffset = MISSING_VALUE;
     
   @CsvField(optional = true, name = "safe_duration_factor")
-  private int safeDurationFactor = MISSING_VALUE;
+  private double safeDurationFactor = MISSING_VALUE;
 
-  @CsvField(optional = true, name = "safe_duration_offset", mapping = StopTimeFieldMappingFactory.class)
-  private int safeDurationOffset = MISSING_VALUE;
+  @CsvField(optional = true, name = "safe_duration_offset")
+  private double safeDurationOffset = MISSING_VALUE;
   
   public StopTime() {
 
@@ -650,30 +650,30 @@ public String toString() {
         + ")";
   }
 
-	public int getMeanDurationFactor() {
+	public double getMeanDurationFactor() {
 		return meanDurationFactor;
 	}
 	
-	public void setMeanDurationFactor(int meanDurationFactor) {
+	public void setMeanDurationFactor(double meanDurationFactor) {
 		this.meanDurationFactor = meanDurationFactor;
 	}
 	
-	public int getMeanDurationOffset() {
+	public double getMeanDurationOffset() {
 		return meanDurationOffset;
 	}
 	
-	public void setMeanDurationOffset(int meanDurationOffset) {
+	public void setMeanDurationOffset(double meanDurationOffset) {
 		this.meanDurationOffset = meanDurationOffset;
 	}
 	
-	public int getSafeDurationFactor() {
+	public double getSafeDurationFactor() {
 	    if (proxy != null) {
 	        return proxy.getSafeDurationFactor();
 	      }
 	      return this.safeDurationFactor;
 	}
 	
-	public void setSafeDurationFactor(int safeDurationFactor) {
+	public void setSafeDurationFactor(double safeDurationFactor) {
 	    if (proxy != null) {
 	        proxy.setSafeDurationFactor(safeDurationFactor);
 	        return;
@@ -681,14 +681,14 @@ public void setSafeDurationFactor(int safeDurationFactor) {
 	      this.safeDurationFactor = safeDurationFactor;
 	}
 	
-	public int getSafeDurationOffset() {
+	public double getSafeDurationOffset() {
 	    if (proxy != null) {
 	        return proxy.getSafeDurationOffset();
 	      }
 	      return this.safeDurationOffset;
 	}
 	
-	public void setSafeDurationOffset(int safeDurationOffset) {
+	public void setSafeDurationOffset(double safeDurationOffset) {
 	    if (proxy != null) {
 	        proxy.setSafeDurationOffset(safeDurationOffset);
 	        return;
diff --git a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTimeProxy.java b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTimeProxy.java
index ed693bafa..0ef6f4c71 100644
--- a/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTimeProxy.java
+++ b/onebusaway-gtfs/src/main/java/org/onebusaway/gtfs/model/StopTimeProxy.java
@@ -103,19 +103,19 @@ public interface StopTimeProxy {
 
   public void setDropOffBookingRule(BookingRule dropOffBookingRule);
 
-  public int getMeanDurationFactor();
+  public double getMeanDurationFactor();
 	
-  public void setMeanDurationFactor(int meanDurationFactor);	
+  public void setMeanDurationFactor(double meanDurationFactor);	
 	
-  public int getMeanDurationOffset();
+  public double getMeanDurationOffset();
 	
-  public void setMeanDurationOffset(int meanDurationOffset);
+  public void setMeanDurationOffset(double meanDurationOffset);
 	
-  public int getSafeDurationFactor();
+  public double getSafeDurationFactor();
 	
-  public void setSafeDurationFactor(int safeDurationFactor);
+  public void setSafeDurationFactor(double safeDurationFactor);
 
-  public int getSafeDurationOffset();
+  public double getSafeDurationOffset();
 	
-  public void setSafeDurationOffset(int safeDurationOffset);
+  public void setSafeDurationOffset(double safeDurationOffset);
 }
diff --git a/pom.xml b/pom.xml
index 00f0b3c35..29213cd6a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -110,32 +110,62 @@
         <version>1.8.0</version>
         <scope>test</scope>
       </dependency>
+	  <dependency>
+	    <groupId>javax.xml.bind</groupId>
+	    <artifactId>jaxb-api</artifactId>
+	    <version>2.3.0</version>
+	  </dependency>
+	  <dependency>
+	    <groupId>com.sun.xml.bind</groupId>
+	    <artifactId>jaxb-core</artifactId>
+	    <version>2.3.0</version>
+	  </dependency>
+	  <dependency>
+	    <groupId>com.sun.xml.bind</groupId>
+	    <artifactId>jaxb-impl</artifactId>
+	    <version>2.3.0</version>
+	  </dependency>
     </dependencies>
   </dependencyManagement>
 
-  <build>
-    <plugins>
-      <plugin>
-        <!-- This plugin must be configured both here (for attach-javadoc during release)
-        and in "reports" (for site generation), preferably with identical version numbers. -->
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.10.3</version>
-        <configuration>
-          <!-- Turn off Java 8 strict Javadoc checking -->
-          <additionalparam>-Xdoclint:none</additionalparam>
-          <source>8</source>
-        </configuration>
-        <executions>
-          <!-- Compress Javadoc into JAR and include that JAR when deploying. -->
-          <execution>
-            <id>attach-javadocs</id>
-            <goals>
-              <goal>jar</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
-  </build>
+	<build>
+		<plugins>
+			<plugin>
+				<!-- This plugin must be configured both here (for attach-javadoc during 
+					release) and in "reports" (for site generation), preferably with identical 
+					version numbers. -->
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-javadoc-plugin</artifactId>
+				<version>3.0.1</version>
+				<configuration>
+					<!-- Turn off Java 8 strict Javadoc checking -->
+					<additionalparam>-Xdoclint:none</additionalparam>
+					<source>8</source>
+					<failOnError>false</failOnError>
+				</configuration>
+				<executions>
+					<!-- Compress Javadoc into JAR and include that JAR when deploying. -->
+					<execution>
+						<id>attach-javadocs</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-jar-plugin</artifactId>
+				<version>3.0.1</version>
+			</plugin>
+		</plugins>
+	</build>
 </project>