The situation on the road is unpredictable, and even a serviceable car may require emergency evacuation. The driver, who finds himself in the role of a savior, takes on a huge responsibility not only for his transport, but also for the car following behind. Any mistake in the organization of the towing process can turn a road situation into an emergency.
One of the critical parameters that directly affect the safety of maneuvering is the length of the coupling. Too short cable leaves no time for reaction, and too long provokes the creation of dangerous situations for other participants in the movement. In this article, we will discuss the technical and legal aspects of choosing the right distance.
Normative requirements of traffic rules to the length of the coupling
The traffic rules clearly regulate the parameters of towing in order to minimize the risks on the road. The main document on which the driver should rely is paragraph 20.4 of the traffic rules of the Russian Federation. According to the current regulations, when using plug-in The distance between vehicles should be from 4 to 6 meters. This is not a recommendation, but a strict requirement of the law.
This range is not chosen by chance. Four meters is the minimum length that allows the driver of the towed car to see the maneuvers in front of the moving car and have time to react to braking or turning. If the distance is smaller, the risk of collision with an inertial jerk increases many times. The driver behind the car just does not have time to brake if the driving car stops abruptly.
β οΈ Attention: Using a cable shorter than 4 meters is a traffic violation and poses a direct threat to life. In case of an accident with such a coupling, wine can be distributed differently due to non-compliance with the technical conditions of towing.
The 6-meter limit is also for safety reasons. Too long a cable on a narrow city street can lead to the fact that another car will try to dive into the gap. This will create an emergency situation instantly, as it becomes extremely difficult to maneuver two connected cars. In addition, the long cable sags more, which increases the risk of catching the road surface or pedestrians.
Always carry a marking tape or a piece of bright fabric in the trunk to visually mark the middle of the sagging cable if it seems too long for other drivers if necessary.
Features of rigid and flexible coupling
The choice of the type of connection dictates its conditions by distance. Flexible coupling, which is a cable, obeys the rule of 4-6 meters. However, there are situations where the use of the cable is impossible or undesirable, for example, in case of a malfunction of the brake system of a towed car. In this case, the application stick-up.
For a rigid structure, which is a metal bar, the rules set different parameters. The distance between vehicles when using a rigid coupling shall be exactly 4 metres. This is a fixed value due to the design of the device itself. The tight connection eliminates sagging and jerks characteristic of the cable, but requires greater accuracy in control.
It is important to understand the difference in movement dynamics. The flexible cable is constantly stretched and sagged, creating a variable load. The hard bar transmits the force instantly. Therefore, when using the bar, the driver of the towed car must be even more careful, since the reaction time is reduced, despite the fixed distance.
- π Flexible coupling: It allows maneuvering at low speeds, but requires constant clutch and brake work to maintain tension.
- π Hard grip: ensures the stability of the trajectory, is prohibited with faulty brakes (except for special structures), requires strictly 4 meters of distance.
- π Partial loading: When towing by partial loading (when the front wheels are on weight), the distances are regulated by the dimensions of the trailer-roller, and not by the rules of coupling.
Can I tow a car with automatic transmission on a cable?
Towing cars with automatic transmission on a flexible coupling is possible only for short distances (usually up to 50 km) and at low speed (no more than 40-50 km / h). The selector must be in position N. However, manufacturers often recommend using only a tow truck or a hard coupling, since in automatic transmission lubrication of the nodes occurs only when the engine is running.
Technical requirements for towing cable
Not only does length matter, but the quality of the material itself. The cable must have sufficient strength to withstand the weight of the towed car and dynamic loads during jerks. The usual knight cord for such purposes is categorically not suitable - it can burst at the most inopportune moment, turning into a dangerous whip.
The optimal solution is steel cables or specialized synthetic slings with a margin of safety of at least 2 tons for passenger cars. For SUVs and crossovers, this parameter should be higher. At the ends of the cable should be reliable fastening elements - hooks or hinges that will not unbend under load.
Another important aspect is visibility. According to the SDA, a flexible coupling must be installed warning-sign "Train" (yellow square with red border). If no such sign is present, the cable shall be visible at a distance of at least 100 metres. In practice, this means that the cable must be bright in color or have woven red flags/ribbons every 1-1.5 meters.
| Parameter | Flexible coupling | Hard grip. | Partial loading |
|---|---|---|---|
| Length/Distance | 4 - 6 meters | 4 meters | Designed |
| Brake system | Correctly required. | Could be faulty | Not required |
| Max. speed | 50 km/h | 50 km/h | 50 km/h |
| "Train" sign | Mandatory. | Not required | Not required |
*Note: The rigid coupling allows tow vehicles with faulty brakes only if it is specifically designed for this (provides synchronous braking). A conventional triangular bar does not give the right to tow a car without brakes.
Speed limits and route selection
Even with an ideal distance of 5 meters, the speed of the road train should not exceed 50 km / h. This restriction is intended to allow drivers of both vehicles to have time to react. At speeds above 50 km/h, the inertia of the towed vehicle becomes uncontrollable, especially on slippery roads or when descenting.
The route should also be planned in advance. Avoid large thoroughfares with heavy traffic where other drivers may not notice the towed vehicle and try to cut the column. City traffic, with its constant accelerations and braking, is also not ideal for towing, but often there is no choice.
If the path lies through the settlement, move on the right lane, without making sharp changes. Warn the driver in advance of your actions. In dense traffic, a distance of 4-6 meters can be perceived by other drivers as an opportunity to wedge, so constant visual contact between drivers through mirrors or contractual signals is extremely important.
βοΈ Check before towing starts
Signals and interaction of drivers
Towing is a team effort. The driver of the towing car (leader) sets the pace, and the driver of the towed (subject) must completely repeat his actions. Since sound signals cannot be used in the city, and not everyone has radio communication, drivers must agree on a sign system.
Light signals are commonly used: a short flashing βemergencyβ or left turn can mean βready,οΏ½οΏ½ βattention,β or βslow down.β The sound signal (the beep) can also serve as a warning, but it should be used carefully so as not to scare other participants in the movement.
The main task of the driver is to keep the cable in constant, but not excessive tension. If the cable sags, you need to slightly add gas, if stretched too much - slow down. Sharp movements steering or braking the driving car can cause the train to fold or bumper to hit.
β οΈ Attention: If the cable sagged and got tangled under the wheels, immediately give a stop signal. Movement with a wheel mounted on the cable will lead to rupture of the coupling and possible damage to the brake hoses or wiring.
Liability and penalties for violations
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