21.   AN academic has suggested the installation of an alarm system on buses that would warn drivers against speeding.

22.   Other services under development include a collision avoidance system that warns drivers of dangers when approaching an intersection or railroad crossing.

23.   Some were reopened later but only after police warned drivers that their safety could not be guaranteed.

24.   The driver is warned of any changes from the pit via a display on his steering wheel, then presses a button to acknowledge the changes being made.

25.   The pair said they had warned the driver to slow down when they saw the divers surface.

26.   The Taliban also warned bus drivers against fraternizing with female passengers, telling jokes or displaying posters.

27.   LFTU officials early Monday began forcing passengers to disembark from taxicabs and buses, and warned drivers to park and observe the strike.

28.   Police said that a witness had tried in vain to save the victim by warning the driver of the oncoming train.

29.   The quartet were summoned by race officials, who also warned the drivers about their conduct in the future.