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Punctuality and Reliability

4 weeks
ending
Reliability Annual
Average
Punctuality Annual
Average
28/04/18 99.49% 99.36% 95.66% 91.95%
26/05/18 99.42% 99.35% 94.79% 92.10%
23/06/18 99.55% 99.35% 94.87% 92.25%
21/07/18 99.80% 99.40% 91.93% 92.32%
18/08/18 99.22% 99.36% 90.63% 92.05%
15/09/18 98.89% 99.37% 91.33% 92.10%
13/10/18 99.36% 99.34% 91.72% 92.15%
10/11/18 99.25% 99.32% 94.20% 92.41%
08/12/18 99.13% 99.31% 89.92% 92.30%
05/01/19 98.19% 99.28% 93.17% 92.55%
02/02/19 99.28% 99.27% 92.95% 92.52%
02/03/19 99.69% 99.31% 92.22% 92.75%
31/03/19 99.16% 99.28% 92.90% 92.79%
27/04/19 99.68% 99.29% 96.48% 92.84%

Current PPM Moving annual average 92.96%

Season ticket extension days during previous 12 months: Five
(due to the voiding of the morning peaks of 10th August and 13th June and the evening peaks of 29th May, 23rd,25th July, 1st, 6th, 7th August, 12th and 13th September)

Season ticket discount for reliability WILL NOT apply between 5th May 2019 and 1st June 2019

Season ticket discount for punctuality WILL NOT apply between 5th May 2019 and 1st June 2019
 

Punctuality = percentage of peak hour trains arriving no later than 5 minutes after scheduled time

Reliability = percentage of scheduled weekday trains actually run.

We are also measured by the Department for Transport (DfT) on our all day PPM (Public Performance Measure). This measures the punctuality of all our services, 7 days a week

The public performance measure (PPM) shows the percentage of trains which arrive at their terminating station on time.

PPM combines figures for punctuality and reliability into a single performance measure. It is the industry standard measurement of performance.

The table below includes the following four regions:

Birmingham line - all trains serving Princes Risborough or any station north thereof

High Wycombe line - trains only serving stations Princes Risborough, Aylesbury (or south thereof, via High Wycombe)

Aylesbury line - all trains serving Aylesbury Vale Parkway or any stations south thereof (via Amersham)

Oxford line - all trains serving Bicester Village or any station north thereof
 

Punctuality and Reliability PPM

4 weeks
ending
Birmingham
line
High Wycombe
line
Aylesbury
line
Oxford
line
28/04/18 94.86% 97.3% 96.89% 95.47%
26/05/18 91.69% 95.9% 96.07% 91.32%
23/06/18 91.87% 95.68% 93.85% 90.39%
21/07/18 89.36% 95.43% 93.14% 87.68%
18/08/18 87.36% 92.54% 90.64% 85.17%
15/09/18 87.91% 93.18% 93.83% 83.78%
13/10/18 91.96% 96.07% 91.78% 90.90%
10/11/18 93.64% 97.18% 93.73% 95.82%
08/12/18 89.28% 95.60% 91.96% 92.79%
05/01/19 92.60% 93.41% 95.06% 91.14%
02/02/19 93.77% 97.35% 94.52% 92.41%
02/03/19 92.37% 95.08% 94.78% 91.29%
31/03/19 93.15% 94.44% 94.43% 91.38%
27/04/19 95.69% 97.72% 97.76% 95.11%

 

Punctuality

Right time punctuality measures the proportion of trains arriving at their terminal station early or within 59 seconds of their scheduled arrival time.

Train Arrival times

Last four weeks

01 Apr to 27 Apr 2019

 

Last 12 months

27 Apr 2018 to 27 Apr 2019