The Static data packet is sent to the client initially and consists of descriptive information about each ramp. The dynamic meter data is the 30 second ramp meter rates for all the meters. This data is not time stamped. The length of red time for each rate is unique for each ramp, in other words a rate 5 at one ramp may or may not be the same red time as a rate 5 on another ramp. The message type is used internally.
Table lists the static rap meter data structure.
The mode field represents the present mode of operation for the meter, as listed below. The number of packets sent is equal to the detector count sent in the command packet. The data is structured in Table . The number of sub-packets in the command structure is not used for incident data. For example, if there are 3 incidents in a data transfer, the first 32 bits in the stream would be an integer value of 3 immediately followed by the 3 incident data packets.