Please help to understand the hand-writing of traffic police!

Please help to understand the hand-writing of traffic police!
 

please help to translate. it is kinda urgent.
http://snag.gy/aWf5K.jpg

This is what it seems to say:

Estacionar el vehículo y constituyendo un peligro y obstaculizando gravemente el tráfico de vehículos.
(Estacionar en un carril de la TF 13 para consultar GPS)

Please note that this is a language learning forum. We can't translate for you.
If you are learning Spanish, please post your own translation attempt and we'll help you correct it if needed. :)

That's the road in north Tenerife between Tegueste Tejina and Bajamar, if that's any help.