Driver slang is rich in expressions, and one of the most common is "checker". So in the people called an artificial obstacle on the roadway, designed to force motorists to slow down. However, if you are stopped by the traffic police inspector or there is a controversial situation in an accident, the use of colloquial terms can play a cruel joke. In official documents and laws you will not find the word "checker" or "slow cop".
For competent communication with law enforcement officers and understanding of technical documentation, you need to know formality of this element. The correct term is “artificial irregularity” or more specifically “artificially created irregularity.” Such formulations are enshrined in the set of rules and state standards of the Russian Federation.
Understanding the right nomenclature is not just a tribute to bureaucracy, but a way to protect your rights on the road. Knowing how technically and legally competently this object is called, you will be able to correctly make complaints in case of improper installation or contest fines. Let’s see what other names exist and what the difference is.
Official terminology and abbreviations of GOST
In the normative documents regulating the organization of road traffic, strictly defined abbreviations are used. The main document is GOST R 50070-2009, which classifies these objects. According to the standard, there are two main types of structures, and they should not be confused, since the requirements for their installation differ.
The first type is denoted by the abbreviation idn (Artificial road bumps). This is exactly what we are used to seeing in courtyards and parking lots – a elevation with gentle runs, often covered with rubber or asphalt. The key difference between the IDN and other types is the mandatory presence of smooth exits on both sides, which allows you to pass them at low speed without damaging the suspension.
The second type is called DDN (Road and transport compulsory braking). Such structures are sharper projections, often made of concrete or metal, and are designed to force the speed to a minimum. They are installed in places with particularly strict safety requirements, for example, before entering kindergartens or schools.
⚠️ Note: The use of the term “slow cop” in official complaints or records may be considered incorrect. Always write “IDN” or “artificial irregularity.”
The distinction between these concepts is also important in terms of utilities' responsibilities. If the design does not conform to its type (for example, the EDN has a too steep angle of lift), this is a violation of standards. The driver should carefully examine the signage before the obstacle, as the sign may indicate a type of irregularity.
Common names and origin of terms
In addition to the official terms, many synonyms have been established in everyday life. The most popular of them is the “slow cop”. This term came to us from Western culture. sleeping policeman) where such elements appeared much earlier than in Russia. The name metaphorically refers to the function of the object: it “guards” the road and makes violators “subject”, even if the real traffic controller is not nearby.
The word checkers mentioned in the request is also widely used, especially in central Russia. It reflects the visual similarity of individual segments of irregularity with chess pieces or just bars. Other variations can sometimes be heard that drivers use colloquially to indicate any obstacles on the pavement.
It is interesting that in different regions there can be local names. However, no matter what you call it in conversation with friends, there is only one option for legal correspondence. The use of jargon in a dialogue with a traffic police officer can create the impression of a frivolous attitude of the driver to the rules.
- 🚔 A down-and-down cop. The most common synonym, understandable to all participants of the movement.
- 🏁 Checker A slang name often used by experienced drivers.
- 🛑 Combine rare, but occurs in some regions to indicate grooved surfaces.
- 🚧 Reclining hammer - another variant of the metaphorical name, emphasizing the impact on the suspension.
Design features and types of execution
Modern artificial irregularities can be made of various materials. The choice of material depends on the intensity of traffic, climatic conditions and the budget of the installation. The most common option is prefabricated structures made of rubber crumb. They have good wear resistance and, importantly, do not damage the road surface as much as concrete.
Concrete and asphalt IDNs are more common in places with a constant flow of heavy transport or where durability is required. However, they have a significant drawback - a high noise level during the passage and rigidity. To reduce noise and improve visibility, such irregularities are often equipped with retroreflective elements.
Pay attention to the color of artificial irregularity. According to GOST, it must be contrasting (usually black and yellow) and equipped with reflectors. If the checker is black and merges with the asphalt at night - this is a violation of safety requirements.
There are also metal structures that are more often referred to as DDN type. They are very durable, but require perfect installation. Any deformation of the metal can damage the wheels or suspension elements of the car. Therefore, the state of such irregularities requires regular monitoring.
An important element of the design is the drainage system. If the IDN is installed correctly, it should not create pockets for accumulation of water or dirt, which is especially important in the autumn-spring period. Stagnation of water on unevenness can lead to the formation of an ice crust in winter, turning the safety tool into a source of increased danger.
Installation rules and requirements of GOST
The installation of artificial irregularities is a strictly regulated process. You can't just put a couple of bars across the road. The installation site should be agreed with the traffic police and comply with the scheme of traffic management. There are clear restrictions on the place of accommodation: it is forbidden to install IDN at public transport stops, bridges, overpasses and tunnels.
The key requirement is the presence of a warning sign 5.20 "Artificial irregularity". It is placed immediately before the obstacle. Without this sign, the demand to slow down is considered unreasonable, and the design itself can be declared illegal. In addition, road markings must be applied in front of the sign.
☑️ Verification of legality of installation of the IDS
Particular attention is paid to the dimensions. The width of the IDN shall be equal to the width of the carriageway so that the driver cannot pass the obstacle on the side of the road or oncoming lane. If the roughness is already expensive, it creates an emergency situation, forcing drivers to maneuver. The height and gently slopes are also strictly standardized so as not to damage the ground clearance of passenger cars while observing the speed regime.
| Parameter | GOST requirement | Purpose of the claim |
|---|---|---|
| Height of irregularity | 70-120 mm | Effective braking without damaging the vehicle |
| Breadth of irregularity | At least the width of the strip | Exclusion of oncoming detour |
| Warning sign | Mandatory (5.20) | Informing the driver in advance |
| Markings | Horizontal 1.25 | Visual highlighting of the object on the canvas |
| Lighting | Reflectors | Visibility at night |
Violation of any of these points gives the driver the right to consider the installation illegal. However, it is worth remembering that even in the absence of a sign, if the irregularity is obvious and visible, it is recommended to slow down the speed to avoid damage to your vehicle.
Impact on the vehicle and driving equipment
Regular passage through artificial irregularities, especially at high speed, negatively affects the technical condition of the car. First of all, they suffer. suspension: shock absorbers, Silent blocks and ball supports are affected by impact loads. Frequent impacts can lead to failure of the shock absorbers racks and the appearance of backlashes in the steering.
Wheels and wheels are also at risk. A sharp blow to the edge of a concrete or metal “checker” can cause a hernia on the sidewall of the tire or deformation of the cast disc. In severe cases, a tire rupture is possible, which at high speed is fraught with loss of control. Therefore, the question of “what is the name of the checker on the road” for many drivers is transformed into the question of “how to drive it correctly”.
What happens if you drive a checker at speed?
When driving the IDN at a speed above 20 km/h, a dynamic impact occurs, the force of which can be several times higher than the static load on the axle. This leads to a sharp compression of the spring and the impact of the breaker on the cup, which can penetrate the shock absorber or damage the body at the place of attachment of the suspension.
The correct technique is simple: you need to slow down to the lowest possible speed (usually 5-10 km / h) immediately before the obstacle. Braking should be carried out before the start of the lifting on unevenness. Brakes on the hump itself are not recommended, as this increases the load on the front axle and can lead to a “cheek” nose, increasing the risk of bumper damage.
Owners of low-clearance vehicles should be especially careful. For them, there are special models of IDN with a gap in the middle or more gentle stingrays, but you should not rely on their presence. It is better to assess the trajectory of the wheels in advance, so as not to touch the bottom of the protruding part.
Legal aspects and fines
The issue of liability for improper installation or detour of artificial irregularities is regulated by the Code of Administrative Offences (Cao of the Russian Federation). If the checker is installed with violations of GOST (no sign, poor visibility, incorrect dimensions), then the organization responsible for the maintenance of the road is responsible for possible accidents or damage to the car.
On the other hand, if a driver ignores the warning signs and develops high speed, he is violating the rules of the road. Although there is no separate fine for “incorrect passage of a lying policeman” in the code, this action falls under Article 10.11 of the Administrative Code of the Russian Federation (“Speed Violation”) or can be regarded as a threat to traffic safety.
⚠️ Note: If you have damaged your car with an illegally installed bump, be sure to record the absence of a 5.20 sign and markings on the photo and video. This will be the main evidence in court in recovering damage from the balance holder of the road.
The amount of the speeding penalty for passing an IDN depends on how much the driver exceeded the permissible limit in this area. Often the speed is limited to 20 km/h or even 5 km/h in the areas of childcare facilities. Exceeding this threshold by 20 km/h is already an offence.
So knowing what the official name of the checker on the road is is just the tip of the iceberg. It is much more important to understand the rules of interaction with this element of road infrastructure. Compliance with the speed mode and attentiveness to the signs will help to keep the suspension of the car intact, and the driver's license clean.
The correct term is IDN (Artificial Road Unevenness). The absence of a 5.20 sign makes the operation of the bump illegal, but does not relieve the driver of the duty of care.
Frequently Asked Questions (FAQ)
Can I drive around artificial irregularities on the oncoming lane?
The EDN is strictly prohibited in the oncoming lane if it requires crossing a continuous line of markings. According to the traffic rules, the driver is obliged to slow down and pass the obstacle. Departure to the oncoming lane with the crossing of a solid line threatens with deprivation of rights for a period of 4 to 6 months.
Who should set the signs before the checkers?
Installation of signs and the design itself is engaged in organizations containing this road (city administration, HOA management company, developer). However, the coordination of the installation site and the scheme of placement of signs is necessarily carried out with the local traffic police unit.
What if I damaged my car due to an irregularity?
It is necessary to call traffic police officers to fix the accident, take photos of the scene of the accident (close-up damage, general road plan, lack of signs), find witnesses. Then you should file a lawsuit against the organization responsible for this section of the road, for damages.
Is there a height limit for cars?
Yes, according to GOST R 50070-2009, the height of artificial road irregularity should not exceed 70 mm (in some cases up to 120 mm for DDN), and the angle of lifting should be such as not to cause damage to cars when driving at the permitted speed.