Overview

This Function shall be capable of providing the following facilities:

(1) The ability to manage the store of Environmental Conditions Data.
(2) In performing this activity, the ability to collect and collate environmental data provided by other functionality and from other System(s) and load this data into the store of Environmental Conditions Data.
(3) Periodically or when requested by the Road Network Operator, the ability to retrieve data from the store of Environmental Conditions Data and send it to other functionality in the System.
(4) The ability to retrieve data from the store of Environmental Conditions Data and send it to other functionality in the System and when returned, load the results back into the store.
(5) When confirmed by the Road Network Operator, the ability to add to the store of Environmental Conditions Data any confirmed actions to reduce the impact of environmental conditions.
(6) The ability to provide the Road Network Operator with copies of the stored data when requested by the Operator.

Functional Requirements

(a) when any but the third or fourth input trigger flows are received, their contents shall be loaded into the Environmental Conditions Data Store
(b) when the third input trigger data flow is received, the appropriate actions in (c) to (g) shall be carried according to the contents of the command
(c) data shall be sent to other Functions using the first, fifth and sixth trigger output data flows
(d) data shall be sent to another Area using the seventh and eighth trigger output data flows
(e) data shall be sent to the prediction Function using the second trigger output data flow
(f) data shall be obtained from the store (analyse it for output if so requested) and sent to the Operator interface Function using the third trigger output data flow
(g) data shall be sent to another System using the last (ninth) output trigger data flow
(h) the actions in (c), (d), (e) and (g) shall be carried out at periodic intervals if not requested by the Operator
(i) confirmation of requested data transfers shall be provided to the Operator when they are complete
(j) all periodic data transfers shall be logged for later access by the Operator
(k) when data in (a) above is loaded, the pollution levels shall be checked against pre-set levels
(l) if the result of (j) shows that the levels are exceeded, the data shall be sent to the incident management Function using the fourth trigger output data flow
(m) if the third trigger input data flow contains changes to the periods at which data is output, or to the pre-set levels in (j) above, the changes shall be made to the values in the Function's internal store
(n) the completion of (l) shall be confirmed to the Operator using the third trigger output data flow
(o) the integrity and contents of the store of Environmental Conditions Data shall be maintained and managed to make most efficient use of the space available whilst optimising data access time.

Diagrams

Parent Higher Level Function

• 3.4 Provide Environmental Information

Input logical dataflows

• fors.etms-environmental_data_updates
• mt_atmospheric_pollution_data_inputs
• mt_confirmed_environmental_actions
• mt_environmental_conditions_operator_requests
• mt_environmental_conditions_prediction_store_data
• mt_environmental_conditions_static_data_update
• mt_noise_pollution_data_inputs
• mt_read_environmental_conditions_data
• mt_request_environmental_data_analysis
• mt_weather_condition_data_inputs

Output logical dataflows

• mt_environmental_conditions_data_for_predictions
• mt_environmental_conditions_operator_responses
• mt_environmental_data_for_analysis
• mt_load_environmental_conditions_data
• tors.etms-environmental_data_updates

User needs