Waze for Cities partners GeoRSS API to retrieve traffic data - customize url with time param

[AyeletR1963]

hi,
according to Waze Data Feed specifications, Adjustments to the feed content after getting the base feed URL
can customize by adding additional parameters like DFP, String (date time pattern), Date format pattern to use in date time fields
to avoid duplicate aierts in the output.
does anyone knows how to do it ?

thanks for any help,
ayelet from egged transportation company