decis execut committe april improv polic cooper prevent detect crimin offenc sch execut committe regard articl agreement implement schengen convent regard articl abovement convent desir continu effort improv condit cross border polic cooper take account execut committe decis decemb doc sch rev decid principl govern polic cooper prevent investig crimin offenc set presid note doc sch rev april approv luxembourg april presid schapper subject applic articl convent improv polic cooper prevent investig crimin offenc sch rev german presid strive improv polic cooper contract state investig crimin offenc group meet septemb presid submit note set problem solut sch rev deleg agre allevi shortcom polic cooper area investig crimin offenc provis schengen convent uniform interpret appli basi object contract state agre improv polic cooper crimin investig prejudic power judici author solut feasibl short term list purpos appli articl schengen convent improv investig prevent crimin offenc polic forc schengen state exchang inform provid inform exchang requir coerciv measur inform exchang admiss domest law request contract state activ carri sole preserv judici author requir consent improv investig prevent crime achiev mean cooper polic forc schengen state involv judici author ground suspicion concret danger aris notabl step list list exhaust implement step mention subject admiss nation law request request state identif vehicl owner driver driver licenc enquiri trace whereabout resid identif telecommun subscrib telephon fax internet provid inform publicli obtain inform person concern polic voluntari basi identif person transmiss polic intellig polic databas file subject complianc relev legal provis govern data protect prepar plan coordin search measur initi emerg search independ si search trace origin good weapon vehicl trace sale channel examin evid vehicl damag hit run accid erasur document schengen state accord articl schengen convent agre individu contract parti lai addit area polic provid mutual assist involv judici author applic judici consent proviso articl prompt inform evid crimin proceed request contract state requir formal letter rogatori addit polic request scant resourc author respons crimin prosecut deploi deal urgent problem crime prevent unnecessarili constrain consent requir point articl stipul authoris obtain judici author order introduc document evid procedur obtain authoris matter contract state determin schengen state agre polic forc judici author transmit request authoris document result deal request mean swift transmiss provid transmiss written trace document author telefax mail simplif procedur crimin investig emerg acceler simplifi procedur exemplifi bilater arrang schengen state instig judici author polic author cooper directli assist polic interview search seizur object delai danger contract state experi gain similar agreement determin schengen wide procedur devis nation law austria germani netherland principl voluntari polic interview appli