Data quality report

Notts & Derby Buses_Derby_Littleover_20171031_12

40

Bus lines

129

Critical observations

80

Advisory observations

Contents

Critical observations (129)

These observations are considered critical in terms of data quality. An operator should aim to have zero critical observations in their data.

Stops (67)
Number of observations Observation category
67 Stop(s) are not found in NaPTAN
Timing (36)
Number of observations Observation category
36 Fast timing between timing points
Data set (26)
Number of observations Observation category
26 Missing block number

Advisory observations (80)

These observations suggest there may be an error in the data. However, for some types of services these may be intended by the operator. Advisory observations should be investigated and addressed.

Stops (18)
Number of observations Observation category
18 Missing stops
Timing (56)
Number of observations Observation category
11 First stop is not a timing point
17 Last stop is not a timing point
27 No timing point for more than 15 minutes
1 Slow running time between stops
Journey (6)
Number of observations Observation category
4 Expired lines
2 Journey overlap