Any provision for getting Traffic Congestion values and Quee length for a particular intersection using Route API?
for that kind of information you can use the traffic API. I think the flow segment data is what you are looking for : https://developer.tomtom.com/traffic-api/traffic-api-documentation-traffic-flow/flow-segment-data
I hope this can help.
As JoseJose mentioned - the traffic incidents details method might also give you what you are looking for: https://developer.tomtom.com/traffic-api/traffic-api-documentation-traffic-incidents/traffic-incident-details.
You will get things like length of the incident, cause, delays, severity…