As of November 30, 2023, the DEP API now includes precipitation on roadway data set expressed as precipitation rate per roadway segment.

Starting around October 20, 2023, the DEP automated monitoring system detected a drop in the number of detector data records arriving to DEP resulting in less than 1% of expected data being available in DEP. Transurban resolved the issue on December 3, 2023. Currently there is a gap in Transurban detector data for this time period. Transurban has provided a backfill that is expected to be processed and DEP gap eliminated by February 16, 2024.

Some of the Transurban Express Lanes detector start and end timestamps are not set correctly. Transurban has identified the root cause and is working to resolve this reported issue. In the meantime, a DEP API user has suggested that using 60-second interval between detector start and end timestamps is a generally accurate assumption for most use cases.