1.The maximum speed that vehicles must not exceed on urban roads and crossings is generally 50 kilometres per hour, except for vehicles that transport dangerous goods, which need to drive at a maximum of 40 kilometres per hour.
These limits may be reduced in particularly dangerous journeys by agreement of the municipal authority with the owner of the road, and on urban roads, by the decision of the relevant body of the local municipality.
Under the same conditions, the limits may be extended by the use of appropriate signs, on crossings and on motorways within the town, without exceeding at any time the general limits established for such roads outside the town. In the absence of signs, the maximum speed that vehicles should not exceed on motorways within an urban area will be 80 kilometres per hour.
Buses that carry standing passengers with authorisation may not exceed the maximum speed established in article 48.1.b) under the circumstances discussed in the previous paragraph.
2. Infractions to these norms will be considered as serious as detailed in article 65.4.c), unless they are considered as very serious.
In some cities they are beginning to apply in certain areas a speed limit of 30 kilometres per hour, as these are areas shared by both bicycles and cars, therefore reducing traffic colissions and the consequences from them. In streets where the speed limit is 30 kilometres per hour, you will find that the bike lane is signposted in the middle of the road because preference is given to bicycles on these roads, so they can ride in the middle of the road like the rest of the vehicles if it is indicated.