Transport stocks have hit the buffers slightly after FirstGroup said overall trading remains in line with management expectations but warned the transport industry faces a challenging year ahead.The rail and bus group is joined lower by peer Stagecoach.Support services specialist Babcock is hurt by its announcement that it lost its contract with Network Rail for High Output Track Renewal operations, but trading overall is as expected.On the plus side, Travis Perkins, the leading UK builders' merchant, is higher after it said sales trends for the last three months are ahead of expectations but its current market consensus for 2010 remains unchanged.FTSE 250 - RisersMoneysupermarket.com (MONY) 81.20p +6.07%St James's Place (STJ) 263.00p +5.71%Travis Perkins (TPK) 841.50p +4.99%Premier Oil (PMO) 1,220.00p +4.27%Sports Direct International (SPD) 106.20p +4.12%Domino's Pizza UK & IRL (DOM) 291.30p +3.85%PZ Cussons (PZC) 251.40p +3.67%Aberdeen Asset Management (ADN) 154.90p +3.61%Cookson Group (CKSN) 428.00p +3.51%Forth Ports (FPT) 1,248.00p +3.40%FTSE 250 - FallersGo-Ahead Group (GOG) 1,394.00p -3.80%Game Group (GMG) 159.10p -3.34%Hays (HAS) 105.00p -3.31%FirstGroup (FGP) 414.50p -2.40%Babcock International Group (BAB) 571.00p -2.23%Northern Foods (NFDS) 70.70p -2.08%RPS Group (RPS) 227.70p -1.85%Wellstream Holdings (WSM) 653.00p -1.80%DSG International (DSGI) 27.50p -1.75%Stagecoach Group (SGC) 161.40p -1.65%