Relatives sit next to the coffins of victims of a coach crash during the funeral service at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

Relatives sit next to the coffins of victims of a coach crash during the funeral service at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

A woman cries next to the coffins of victims of a coach crash during the funeral service at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

Relatives of victims of a coach crash carry a coffin, outside a gym where all the bodies were gathered to be claimed, in Monteforte Irpino near Avellino July 29, 2013. Thirty-eight people were killed and 18 injured when the bus plunged 25 metres (80 ft) off a viaduct in southern Italy, in the second major transport disaster in southern Europe in less than a week. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

Relatives sit next to the coffins of victims of a coach crash during the funeral service at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

People pay tribute to the coffins of victims of a coach crash at the end of the funeral service at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

Italy's Prime Minister Enrico Letta (C) reacts as he attends the funeral service of victims of a coach crash at the Monteruscello Palasport near Pozzuoli July 30, 2013. Thousands of people packed into a sports hall in the southern town of Pozzuoli on Tuesday to commemorate 38 people who died when a coach plunged 25 metres (80 ft) off a motorway viaduct in one of the worst road accidents in Italian history. Letta was among an estimated 4,000 mourners at the service during a day of national mourning called after the accident. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT POLITICS) 

A book and some food are seen where a coach crashed after plunging off a viaduct near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

Relatives of the victims of a coach crash react as they stand outside a gym where all the bodies were gathered to be claimed, in Monteforte Irpino near Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when a bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

A policeman stands at the site of a coach crash near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

A hat stuck on a fence is seen at the site where a coach crashed after plunging off a viaduct near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when a bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TPX IMAGES OF THE DAY TRANSPORT) 

A firefighter walks at the site of a coach crash near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT TPX IMAGES OF THE DAY) 

The wreckage of a coach which plunged off a viaduct is loaded onto a trailer near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

A crane removes the wreckage of a coach which plunged off a viaduct near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT TPX IMAGES OF THE DAY) 

The site of a coach crash is seen near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when the bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER TRANSPORT) 

People gather at the site where a coach plunged off a viaduct near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when a bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER) 

A bunch of flowers and a crucifix is placed near the site where a coach crashed after plunging off a viaduct near the southern town of Avellino July 29, 2013. Thirty-nine people were killed and around 10 injured when a bus plunged off a viaduct in southern Italy in what Prime Minister Enrico Letta described on Monday as a huge tragedy. Initial reports suggested that the coach was travelling at speed and had hit four or five cars before crashing over the roadside barriers on a stretch of road near Monteforte Irpino, east of Naples, on Sunday night. There were around 50 people on board, including many children. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER) 

A damaged car is seen after a coach crash near the southern town of Avellino July 29, 2013. At least 36 people died after the bus plunged more than 15 metres (49 feet) off a viaduct in southern Italy on Sunday, a spokesman for the fire service said. The coach was said to have collided with several cars before falling over the viaduct. REUTERS/Ciro De Luca (ITALY - Tags: DISASTER) 

ITALY-CRASH/ - Map locating southern town of Avellino where at least 36 people died after a coach plunged off a viaduct