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Punctuality and Reliability

4 weeks
ending
Reliability Annual
Average
Punctuality Annual
Average
03/02/18 99.43% 99.41% 92.96% 92.16%
03/03/18 99.26% 99.39% 89.03% 92.04%
31/03/18 99.50% 99.37% 92.39% 91.84%
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%

Current PPM Moving annual average 92.77%

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 7th April 2019 and 4th May 2019

Season ticket discount for punctuality WILL NOT apply between 7th April 2019 and 4th May 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
06/01/18 88.62% 93.83% 90.64% 85.04%
03/02/18 93.70% 95.75% 94.52% 90.64%
03/03/18 89.76% 93.58% 92.62% 85.01%
31/03/18 92.91% 96.12% 95.42% 92.16%
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%

 

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

03 Mar to 31 Mar 2019

 

Last 12 months

31 Mar 2018 to 31 Mar 2019