 Peshawar's east-west growth axis is centred on the historic Grand Trunk Road that connects Peshawar to Islamabad and Lahore.The road is roughly paralleled by the M-1 Motorway between Peshawar and Islamabad, while the M-2 Motorway provides an alternate route to Lahore from Islamabad.The Grand Trunk Road also provides access to the Afghan border via the Khyber Pass, with onwards connections to Kabul and Central Asia via the Salang Pass.