System for preventing driving while intoxicated

A drunk driving prevention system, which comprises:

• an external steering wheel locking device, said external steering wheel locking device including a lock;
• means for blocking access to said lock;
• and,
• means for permitting access to said lock if a driver's breath alcohol content is less than a predetermined level.

A drunk driving prevention system, which comprises:

• a steering wheel locking device, said steering wheel locking device including:
• a first bar including a steering wheel engagement member;
• a second bar longitudinally movably mounted with respect to said first bar, said second bar including a steering wheel engagement member;
• and,
• a lock operable to fix said first and second bars longitudinally with respect to each other;
• a lock cover movably mounted with respect to said lock, said lock cover being movable between an open position permitting access to said lock and closed position preventing access to said lock;
• a latch operable to hold said lock cover in said closed position;
• means for releasing said latch;
• a breath alcohol measuring device coupled to said means for releasing said latch.