Almost all entry and exit ramps on the freeway are controlled by traffic signals. Most of the ramps are of sufficient length to avoid any delays to through traffic, with the exception of Military road. The arrangement for accessing the Harbour bridge (For City and west access) southbound can be confusing for anyone unfamiliar with the road, with a choice of either competing with traffic approaching the Sydney Harbour Tunnel via the two lanes at the inner eastern carriageway or having to cross the Bus Lane. The traffic improved when the Sydney Harbour Tunnel went electronic/cashless: the toll is charged either by a beep of an e-tag or by number-plate reading (unless you pay the toll within 48 hours of the number-plate reading, you will be fined); such an arrangement is not uncommon in Sydney, as the Westlink M7, Cross City Tunnel, Lane Cove Tunnel and the M2 Hills Motorway (from December 2007) are fully cashless/electronic. The toll cost is A$3 for southbound vehicles only - Same for the Sydney Harbour Bridge. The traffic improved, allowing only electronic toll enabled traffic to move more efficiently when approaching the Sydney Harbour Tunnel (southbound) at - meaning no stopping, less wear and tear, etc.