UNDER THE GUIDANCE OF MARSHALLERS AND WING WALKERS; THE ACFT WING IS DAMAGED WHEN IT STRIKES A VEHICLE THAT IS OUTSIDE THE SAFETY ZONE MARKINGS. THE SECOND OCCURRENCE AT THIS COMPANY'S INSTALLATION.

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IN THE APCH TO GATE; THE GATE AREA WAS CLR OF ALL VEHICLES BTWN THE SAFETY LINES; AND 3 MARSHALLERS WERE IN VIEW. AS WE NEARED THE GATE AND THE R WING WALKER DISAPPEARED FROM MY VIEW; THE FO OPENED HIS SLIDING WINDOW TO KEEP THE WING WALKER IN SIGHT. DURING THE APCH TO THE GATE AND WHILE BEING DIRECTED FORWARD BY THE LEAD MARSHALLER; THE FO AND I WERE VERBALLY COMMUNICATING ABOUT THE R WING WALKER'S ALL CLR WAND POS. EVEN THOUGH I WAS BEING GIVEN A 'COME AHEAD' SIGNAL TO TAXI FORWARD BY THE LEAD MARSHALLER AND THE ACFT WAS ON THE TAXI LEAD-IN LINE; THE FO COMMANDED THAT I STOP THE ACFT. THE ACFT WAS IMMEDIATELY BROUGHT TO A STOP. THE R WING STRUCK A VEHICLE THAT WAS PARKED OUTSIDE THE SAFETY LINE. NO ONE WAS INJURED. THE DAMAGE WAS LIMITED TO THE R WINGTIP. THE COMPANY NEEDS TO PAINT SAFETY LINES THAT REPRESENT A CLR AND SAFE ZONE IN WHICH TO OPERATE THE ACFT. WE WERE MARSHALLED INTO A VEHICLE LOCATED OUTSIDE OF THE SAFETY LINES; WHICH MEANS THE LINES; AS THEY EXIST TODAY; DO NOT REPRESENT A SAFE AREA. APPROX 2 MONTHS AGO; A SIMILAR INCIDENT OCCURRED AT THIS SAME GATE. POST INCIDENT; TOOK NO ACTION TO CORRECT THE SIT. NOT CORRECTING THE SIT SET THE STAGE FOR THIS INCIDENT. AS OF THIS DATE THERE ARE NO PLANS TO CORRECT THE LINES. AS PLTS; OUR FIRST LINE OF DEFENSE AS WE APCH A GATE IS A WELL-DEFINED SAFE ZONE IN WHICH TO OPERATE DELINEATED BY EASY TO SEE MARKINGS. IF A VEHICLE IS DETECTED WITHIN THE SAFE ZONE; WE STOP THE ACFT. THE VEHICLE INTO WHICH WE WERE MARSHALLED WAS ACTUALLY OUTSIDE OF THE SAFETY MARKINGS. SECOND; BETTER TRAINING FOR ACFT MARSHALLERS IS A MUST. HAD THE R WING WALKER MADE HIS DECISION TO STOP THE ACFT SOONER; THE FO COULD HAVE VERBALLY COMMANDED A STOP PRIOR TO HITTING THE PARKED VEHICLE. THE LEAD MARSHALLER SHOULD HAVE GIVEN ME A STOP SIGNAL AS THE R WING WALKER SIGNALED A STOP. IN OUR CASE; THE LEAD MARSHALLER CONTINUED TO GIVE A 'COME AHEAD SIGNAL' EVEN THOUGH THE R WING WALKER HAD SIGNALED A STOP. POOR TRAINING AND NO MEANINGFUL COORD BTWN GND CREW MEMBERS SHOULD ALSO BE ADDRESSED BY THE COMPANY.