I've attached the second release of the ColdFusion Yahoo Package. It now includes APIs for Traffic and Weather data. Here is a few examples.
Traffic
<cfset trafficAPI = createObject("component", "org.camden.yahoo.traffic")>
<cfinvoke component="#trafficAPI#" method="trafficSearch" returnVariable="result">
<cfinvokeargument name="zip" value="90210">
</cfinvoke>
<cfdump var="#result#" label="Zip search for 90210">
Weather
Weather is a tiny bit more complex. It has 2 public methods. One to get the current weather and one to get the forecast.
<cfset weatherAPI = createObject("component", "org.camden.yahoo.weather")>
<cfinvoke component="#weatherAPI#" method="getWeather" returnVariable="result">
<cfinvokeargument name="location" value="70508">
<cfinvokeargument name="units" value="F">
</cfinvoke>
<cfdump var="#result#" label="Weather for Lafayette, LA">
<cfinvoke component="#weatherAPI#" method="getForecast" returnVariable="result">
<cfinvokeargument name="location" value="70508">
<cfinvokeargument name="units" value="F">
</cfinvoke>
<cfdump var="#result#" label="Forecast for Lafayette, LA">