The ICC Committee that met in May 2012 proposed the amendments which have been approved by the ICC. © Getty Images

The International Cricket Council on Monday (October 29) paved the way for the staging of day-night matches when it announced that new playing conditions for Tests, One-Day Internationals and T20 Internationals came into effect ahead of the Sri Lanka-New Zealand series beginning on Tuesday.
The onus, however, is on individual boards to decide on the desirability and feasibility of day-night matches for a particular series and on the type and colour of the ball to be used.

The amendments were approved by the ICC Board following proposals made by the ICC Cricket Committee at its meeting in London in May. Following are the major changes:

Day/night Tests
“Participating countries may agree to play day/night Test matches. The home and visiting boards will decide on the hours of play which will be six hours of scheduled play per day while the two boards will also decide on the precise brand, type and colour of ball to be used for the match.”

On DRS (Test and ODIs)
An amendment has been made to the LBW protocols. The margin of uncertainty applicable to the point of impact with the pad has been increased so that it is the same as provided for determining the projected point of impact with the stumps. For example, if the centre of the ball is shown to be impacting in line within an area demarcated by a line drawn down the middle of the outer stumps (and the bottom of the bails), then the decision will always be out.
If the whole of the ball is shown to be impacting outside the line of the stumps, then the decision will always be not out. If there is anything in between, the original on-field decision will stand.

Powerplays and fielding restrictions (ODIs only)
There will be two blocks of Powerplays, instead of three. “In an uninterrupted innings, the first Powerplay will be restricted to the first 10 overs with only two fielders allowed outside the 30-yard circle. The second five-over batting Powerplay (in an uninterrupted innings) will have to be completed by the 40th over and only three fielders will be allowed outside the fielding restriction area at the time of delivery. In the non-Powerplay overs, no more than four fielders will be permitted outside the 30-yard circle.”

The ICC also announced an increase in the number of permissible short balls (above shoulder and below head height) in an over in One-Day Internationals. There was no change to the bouncer rule for the Tests or Twenty20 Internationals.

No-balls (all formats)
After every dismissal that is not permitted off a no-ball, and subject to the availability of technology, the third umpire will check the fairness of a delivery (foot-fault only).

Dead ball (all formats)
“In a match where Spydercam is being used, either umpire shall call and signal ‘dead ball’, should a ball that has been hit by the batsman make contact, while still in play, with the Spydercam or its cable. The ball shall not count as one of the over and no runs shall be scored.”

Over-rates (all formats)
If the batting team is the reason for time wasting then such time shall be deducted from the allowances granted to them in the determination of its over-rate. In T20Is, additional allowance of one minute will be given for the fall of each of the sixth, seventh, eighth and ninth wickets.

Duration of intervals (Test matches only)
The duration of the lunch and tea intervals remain unchanged (40 and 20 minutes respectively). However, the host team, with the consent of the opposing side, can apply to the ICC for an approval to provide for intervals of 30 minutes each.

One Over Per Side Eliminator (T20Is only)
In both innings of the one over per side eliminator, the fielding side shall choose from which end to bowl.
Only nominated players in the main match may participate in the eliminator. If any is unable to continue to participate in the eliminator due to an injury, illness or other wholly acceptable reasons, the relevant Laws and Playing Conditions as they apply in the main match shall also apply.
Any penance time being served in the main match shall be carried forward to the eliminator.
The fielding captain or his nominee shall select the ball with which he wishes to bowl his over in the eliminator from the box of spare balls provided by the umpires. Such box to include the balls used in the main match, but no new balls. The team fielding first in the eliminator shall have first choice of ball. The team fielding second may choose to use the same ball as chosen by the team bowling first. If the ball needs to be changed, then playing conditions as stated for the main match shall apply.