Many London Underground lines are delayed after signal point problems caused by the freezing conditions.

BBC: Heavy snow and ice bring travel chaos across UK

If MACD is still on a sell signal in the fall the entry is delayed until it triggers its next buy signal.

FORBES: Sell In May Could Still Come Into Play But Don't Bail Now

Kenya's high court has ordered that the date for the switch off of the analogue television signal be delayed, preferably until after the March poll.

BBC: Kenyan digital TV switchover: Post-election date urged

In the spring if MACD is still on a buy signal when the calendar exit day arrives the exit is delayed until MACD triggers its next sell signal.

FORBES: Sell In May Could Still Come Into Play But Don't Bail Now

Under its rules an exit signal can come as early as April 16, but will be delayed if MACD remains on a buy signal at the time.

FORBES: Sell In May Still Working Like A Charm

In that event, the re-entry is delayed until MACD triggers its next buy signal.

FORBES: Market Correction Started In September, Has Room To Get Worse

The publication of Mr Perry's report has been delayed for months as America awaited a signal of North Korea's intentions.

ECONOMIST: North Korea and America

In the fall, the re-entry can take place as early as October 20, but will be delayed if MACD is on a sell signal at the time.

FORBES: Sell In May Still Working Like A Charm

Final signal checks are being carried out on a delayed guided busway in Cambridgeshire before it is opened next year.

BBC: Cambridge guided busway checked amid row over delays