Being in a foreign can be a daunting experience especially if you are travelling alone. It will always be advised that if you are travelling abroad always travel with another person. If this can not be avoided always make sure you keep someone informed of where you are travelling to. Let them know of your travel plans and how you will be getting there.
When using taxi services abroad it would be safer to get a taxi service number from the hotel or the accommodation you are staying at. More then likely they will use a company on a regular occasion and know they can be trusted. Never get into an unlicensed taxi as this will not be an authorised service.
No matter how many people are travelling in your group it will always be safer not to carry large amounts of cash on you. The safest way is to only carry enough to see you through the day and leave the rest of your spending money in the safe in the hotel. If you wear expensive jewellery and act flash you will be a target for thieves and pick pockets.
When walking around the local area you are staying in, try and avoid walking down dark alleys or off the main road. If you have been approached by someone trying to sell you something just carry on walking. They will more often than not over charge you as they know you are a tourist. If you engage in conversation with them it will be hard to leave without purchasing an item.