youwe’ve all felt some worry at some point after passing a speed radar that we had not warned. And sometimes we wouldn’t even know how to clarify at what speed we passed, because an instinctive reaction led us to take our foot off the accelerator, if not directly to step on the brake. It is true that it reassures us to know that DGT applies margins of errorbut,how much they cost these margins? That’s what we’re going to clear up.

The first thing to notice is that the acceleration margins are not the same below 100 km/h as above of this speed. The reason for this is that it can be much more dangerous to exceed 10 km/h in the city (from 30 to 40 km/h, for example) than to do it on the highway (from 120 to 130 km/h). .

And we should also clarify that the specific tolerance limit applies to the mobile and fixed radars located on the ground, not those of helicopters and drones because they have the ability to follow the offending vehicle and can take a more accurate measurement.

two different rules

below 100km/h the tolerance limit is the result of add 7km/h. That is, on a street limited to 30 you will be fined if you are caught driving in 38 km/h; in a limited to 40, to 48; in a limited to 50, for 58… and so on until you reach the 98km/h that you could no longer reach on a road limited to 90 km/h without being fined.

From 100km/h the rule is to allow no longer 7 km/h, but a 7% added in relation to the limit, which is not the same. In fact, from that speed, the tolerance limit grows as the limit is higher. Thus, on a road limited to 100, and if we add 7%, we find that they are going to fine us if we drive 109km/h; in one of the 110 we will receive the complaint if they catch us 120km/h or above; and in one of the 120 we can be fined if we are caught driving 131km/h… as long as the photo is not taken from the air, where we are not granted tolerances.

The reason why they settle down these two limits differently it is very simple: if the 7% margin were applied below 100 km/h we would find that, in an urban area limited to 30 km/h, we could be fined 32km/hand such a small margin is very difficult to calculate because speedometers are encrypted in the usual way 10 out of 10 (except digital ones, of course).

and add 7km/h at high speeds, for example at 120 km/h, this would mean that in any situation, for example on a descent, we would exceed the tolerance limit sometimes a little let’s look away from the speedometer.

Even so, the fact that DGT does not fine you if you are actually going a little faster than allowed does not mean that it encourages you to exceed the speed limits. You continue to commit an infractioneven if you don’t get fined.

In the city:

If the limit is 30km/h (urban roads with a single lane in each direction), the radar jumps to 38 km/h.

If the limit is 40km/hskip to 48km/h.

If the limit is 50 km/hthe radar jumps to 58km/h.

On conventional roads:

If you drive in a section limited to 60km/hthe radar jumps to 68km/h.

If the limit is 70km/hskip to 78km/h.

If the limitation is 80 k/hthe radar will take the picture at 88km/h.

If the allowed speed is 90km/hthe radar will be activated in 98km/h.

Highway and highway:

In sections limited to 100km/h the radar will jump to 109km/h.

If the allowed speed is 110km/hthey will fine us going to 120km/h.

If the limitation is 120km/hwe will be fined if we meet or exceed 131km/h.