<P> The root cause of the high congestion on the urban section of the M8 is that traffic from the M73 and M80 is forced onto the eastern section of M8 which within 2 miles (3.2 km) converges from five lanes to two on the Kingston Bridge approaches . The result of this is often long periods of traffic congestion . Prior to the construction of the M74 extension, incentives were undertaken in an attempt to minimise delays on this section; these include restricting exits around the Kingston Bridge, a ramp metering programme, and expanded use of electronic signing above and beside the motorway as part of the CITRAC (Centrally Integrated TRAffic Control) system . </P> <P> The M8 represents a significant barrier to wildlife expansion, particularly the reintroduced beaver, from the north of Scotland into the Scottish Lowlands, Southern Uplands and Dumfries and Galloway . </P> <Table> <Tr> <Td_colspan="3"> M8 motorway </Td> </Tr> <Tr> <Td> Eastbound exits </Td> <Td> Junction </Td> <Td> Westbound exits </Td> </Tr> <Tr> <Td> M8 now terminates Edinburgh City Bypass A720 Berwick upon Tweed (A1) Edinburgh City Centre A71 </Td> <Td> J1 </Td> <Td> Start of motorway </Td> </Tr> <Tr> <Td> Edinburgh Airport, Stirling, Queensferry Crossing (M90) M9 </Td> <Td> J2 </Td> <Td> Stirling, Queensferry Crossing (M90) M9 </Td> </Tr> <Tr> <Td> Livingston A899 </Td> <Td> J3 </Td> <Td> Livingston A899 </Td> </Tr> <Tr> <Td> Bathgate, Broxburn, Livingston (West) (A779) A89 </Td> <Td> J3a </Td> <Td> Bathgate, Broxburn, Livingston (West) (A89) A779 </Td> </Tr> <Tr> <Td> Bathgate, Whitburn, Falkirk A801 </Td> <Td> J4 </Td> <Td> Bathgate, Whitburn, Falkirk A801 </Td> </Tr> <Tr> <Td> Whitburn, Heartlands (B7066) </Td> <Td> J4a </Td> <Td> Whitburn, Heartlands (B7066) </Td> </Tr> <Tr> <Td_colspan="3"> Harthill services </Td> </Tr> <Tr> <Td> Shotts, Harthill, Salsburgh (B7066) B7057 </Td> <Td> J5 </Td> <Td> Shotts, Harthill, Salsburgh (B7066) B7057 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J6 </Td> <Td> Airdrie, Lanark, Motherwell, Wishaw, Eurocentral (A723) A73 </Td> </Tr> <Tr> <Td> Lanark, Wishaw, Motherwell, Airdrie A8 (A73) </Td> <Td> J6a </Td> <Td> No access </Td> </Tr> <Tr> <Td> Eurocentral </Td> <Td> J7 </Td> <Td> No access </Td> </Tr> <Tr> <Td> No access </Td> <Td> J7a </Td> <Td> Carlisle (M74), East Kilbride, Bellshill A725 </Td> </Tr> <Tr> <Td> Carlisle (M74) M73 <P> Coatbridge A89 </P> </Td> <Td> J8 </Td> <Td> Carlisle (M74), Glasgow (South), Glasgow Airport M73, Glasgow (East) A8 <P> Stirling, Kincardine Bridge (M80) </P> </Td> </Tr> <Tr> <Td> Baillieston </Td> <Td> J9 </Td> <Td> No access </Td> </Tr> <Tr> <Td> Easterhouse, Barlanark </Td> <Td> J10 </Td> <Td> Easterhouse, Baillieston </Td> </Tr> <Tr> <Td> Garthamlock, Queenslie B765 </Td> <Td> J11 </Td> <Td> Stepps, Queenslie B765 </Td> </Tr> <Tr> <Td> Riddrie, Stepps A80 </Td> <Td> J12 </Td> <Td> Riddrie, Stepps A80 </Td> </Tr> <Tr> <Td> Stirling, Kincardine Bridge M80 </Td> <Td> J13 </Td> <Td> Blochairn, Parkhead </Td> </Tr> <Tr> <Td> Blochairn, Dennistoun B763 </Td> <Td> J14 </Td> <Td> No access </Td> </Tr> <Tr> <Td> Glasgow Cathedral, Glasgow Cross, Kirkintilloch A803 </Td> <Td> J15 </Td> <Td> Glasgow Cathedral, Glasgow Cross A803 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J16 </Td> <Td> Aberfoyle, George Square (A81) </Td> </Tr> <Tr> <Td> Dumbarton A82 </Td> <Td> J17 </Td> <Td> Dumbarton A82 </Td> </Tr> <Tr> <Td> Anderston, Charing Cross (No exit from main carriageway) Glasgow city centre </Td> <Td> J18 </Td> <Td> Kelvingrove, Charing Cross </Td> </Tr> <Tr> <Td> Clydebank, S.E.C.C. A814 No exit from main carriageway </Td> <Td> J19 </Td> <Td> Clydebank, S.E.C.C. A814 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J20 </Td> <Td> Tradeston, East Kilbride (A730) </Td> </Tr> <Tr> <Td> Tradeston, East Kilbride (A8, A730) Carlisle M74 </Td> <Td> J21 </Td> <Td> No access </Td> </Tr> <Tr> <Td> No access </Td> <Td> J22 </Td> <Td> Kilmarnock, Prestwick Airport M77 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J23 </Td> <Td> Govan, Ibrox B768 </Td> </Tr> <Tr> <Td> Govan, Kilmarnock (M77) A761 </Td> <Td> J24 </Td> <Td> Paisley, Bellahouston A761 </Td> </Tr> <Tr> <Td> Clyde Tunnel A739 </Td> <Td> J25 </Td> <Td> Clyde Tunnel A739 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J25a </Td> <Td> Braehead </Td> </Tr> <Tr> <Td> Hillington, Braehead A736 </Td> <Td> J26 </Td> <Td> Hillington, Renfrew (A8) A736 </Td> </Tr> <Tr> <Td> Paisley, Renfrew A741 </Td> <Td> J27 </Td> <Td> Paisley, Renfrew A741 </Td> </Tr> <Tr> <Td> No access </Td> <Td> J28 </Td> <Td> Glasgow Airport </Td> </Tr> <Tr> <Td> No access </Td> <Td> J28a </Td> <Td> Irvine A737 </Td> </Tr> <Tr> <Td> Paisley, Glasgow Airport A726, Irvine A737 </Td> <Td> J29 </Td> <Td> Paisley A726 </Td> </Tr> <Tr> <Td> Erskine, Erskine Bridge M898 </Td> <Td> J30 </Td> <Td> Erskine, Erskine Bridge M898 </Td> </Tr> <Tr> <Td> Start of motorway </Td> <Td> J31 </Td> <Td> Bishopton A8 </Td> </Tr> <Tr> <Td> Bishopton A8 Non-motorway traffic </Td> <Td> Road becomes A8 towards Greenock </Td> </Tr> </Table> <Tr> <Td_colspan="3"> M8 motorway </Td> </Tr>

Where is junction 30 on the m8 motorway