TWENTY people were killed and 24 wounded when a truck collided with a passenger bus in Senegal, the government said, the second major crash this month highlighting poor driving conditions in the West African country. The accident took place near the northwestern town of Louga, around 160 kilometres (105 miles) from the capital Dakar, the government said in a statement. It followed a crash that killed 40 people and wounded about 80 near the southeastern town of Kaffrine on January 8, one of the deadliest in Senegal's recent memory. That incident occurred after the tyre of a passenger bus burst, sending it…